Seattle Mariners News

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Andrés Muñoz • RP • Mariners

Andres Munoz Blows Fourth Save as Struggles Persist, Will he Lose Further Opportunities?

Seattle Mariners closer Andres Munoz ran into trouble again on Friday, blowing his fourth save of the season before the Mariners ultimately defeated the Arizona Diamondbacks in extra innings. Munoz is now just 9-for-13 in save opportunities and has struggled to lock down games consistently as June approaches. The 27-year-old entered the season as one of the American League's premier closers, but he currently owns a 4.98 ERA and 1.34 WHIP. A decline in four-seam fastball usage may be contributing to his struggles. Munoz has thrown the pitch 25.2 percent of the time this season after using it 35 percent of the time in 2025, and the pitch carries a minus-three run value. The talent remains evident, but fantasy managers should monitor the situation closely as his grip on save opportunities becomes less secure. If Munoz continues to struggle, the Mariners could turn to Jose A. Ferrer or Matt Brash for save opportunities.

Yesterday

Colt Emerson • 3B • Mariners

Colt Emerson Hitting Well, Emerging as a Must-Add on the Waiver Wire?

Seattle Mariners third baseman Colt Emerson made his MLB debut less than two weeks ago, and he has already emerged as a must-add player on the fantasy baseball waiver wire. Through 10 games, he is slashing .258/.361/.516 with one home run, one triple, three doubles, an 11% walk rate, a 22% strikeout rate, and 152 wRC+. He has reached base in four consecutive contests, and during that span, he's hitting 6-for-14 with four extra-base hits and a pair of walks. He hasn't given us a ton of home run power yet, but the extra-base hits are quite impressive, and we're encouraged that he can sustain his .877 OPS going forward. There are still plenty of opportunities for him to get scooped up in fantasy baseball, as he's available in 82% of leagues at the moment. Managers should prioritize adding him from the waiver wire.

Yesterday

Kade Anderson • SP • Mariners

Kade Anderson Remains Elite Stash Target Amid Incredible Start to Professional Career

Seattle Mariners pitching prospect Kade Anderson continues to hold must-stash value heading into Week 10 of the fantasy baseball season. Since joining the Mariners with the third overall pick in last year's MLB Draft, the former LSU standout has looked more than comfortable in the minor leagues. The Mariners opted to send the left-hander to Double-A to make his professional debut, and he has flashed incredible potential, striking out 58 hitters over his first 38 2/3 innings. During this stretch, Anderson has posted a 1.63 ERA with a 0.80 WHIP and has allowed just seven total free passes. Removing his lone five-run outlier showing, Anderson would carry a 0.52 ERA over the first two months of the season. Even though there is no clear spot in the rotation for the left-hander, he remains on the verge of a call-up and may not need to wait long if the MLB roster needs additional depth.

2 days ago

Cal Raleigh • C • Mariners

Cal Raleigh Plays "Light Catch" on Monday

Seattle Mariners manager Dan Wilson said that catcher Cal Raleigh (oblique) was slated to play "light catch" on Monday, per Daniel Kramer of MLB.com. Kramer notes that this marks Raleigh's first baseball activity since being placed on the 10-day injured list on May 14 with an oblique strain. While Raleigh's progression to playing catch on Monday is obviously a positive sign, it appears as though Seattle's slugger is still a way away from returning to the big leagues. Raleigh got off to a miserable start to 2026 before the injury, hitting .161/.243/.317 with seven home runs, 18 RBI, 16 runs scored, and two stolen bases across 181 plate appearances. The 29-year-old attempted to play through oblique issues before ultimately being shut down, so the Mariners could be taking every precaution to ensure that Raleigh is pain-free before returning to the lineup. Despite his poor start to 2026, Raleigh remains an elite power threat and a must-start fantasy catcher once healthy.

5 days ago

Kade Anderson • SP • Mariners

Kade Anderson Reclaims Must-Stash Value After Dominant Bounce-Back Effort

Seattle Mariners pitching prospect Kade Anderson enjoyed a dominant bounce-back effort after a season-worst showing. On May 15, the former LSU superstar's near-perfect regular season came to a sudden halt as he allowed six hits and five runs, both of which set season highs. However, on May 22, the left-hander quickly returned to form, logging 4 2/3 shutout frames with three hits and a 7:2 K:BB. Removing his lone outlier outing from his game log, the former No. 3 overall pick would carry an incredible 0.52 ERA, 0.72 WHIP, and a 54:7 K:BB over a short 34 2/3 inning stint with Double-A. Given his current production, the sotuhpaw is already on the verge of reaching Triple-A and may only need a brief taste of the level before reaching Seattle. Even though there is no clear spot for him on the MLB roster, he possesses the highest upside among pitching prospects to stash, making him a priority target in all formats.

5 days ago

Luis Castillo • SP • Mariners

Luis Castillo Set to Start on Monday

Seattle Mariners starting pitcher Luis Castillo is set to make the start during Monday's game against the Athletics. Mariners manager Dan Wilson confirmed that Castillo will start and Bryce Miller will work behind him in a piggyback role. The Mariners tried this strategy on Tuesday, but Miller started, and Castillo worked the final few innings. Castillo tossed 2.1 innings, allowing two earned runs in the first relief appearance of his big league career. The Mariners will reverse the order in which they pitch together and hope for better results from Castillo. The veteran right-hander holds a 6.41 ERA and 1.55 WHIP, so fantasy managers shouldn't put much faith in him right now. Miller will likely pitch the bulk of the innings, so Castillo won't be a recommended fantasy option.

6 days ago

Bryce Miller • SP • Mariners

Bryce Miller Demoted to Bullpen Role for Monday's Game

Seattle Mariners right-hander Luis Castillo is set to start Monday's game against the Athletics. Bryce Miller will come out of the bullpen and follow in the piggyback role. Castillo has struggled this season, posting a 6.41 ERA, 1.55 WHIP, and 47 strikeouts across 46 1/3 innings. The 33-year-old struggled in his only relief appearance, taking the loss, while allowing two runs on a hit, two walks, and a HBP while striking out four over 2 1/3 innings against the Chicago White Sox. It's unclear how many innings Castillo will throw on Monday, but Miller has pitched well since returning from the injured list on May 13. The 27-year-old owns a 1.64 ERA, 1.00 WHIP, a 22.7K%, and a 4.5 BB% through 11 innings. Even though Miller is coming out of the bullpen, he's still worth holding onto in deep league formats, but can likely be dropped in 10-12-team leagues until he solidifies a spot in Seattle's rotation.

6 days ago

Colt Emerson • 3B • Mariners

Colt Emerson Remains a Priority Target Despite Early Struggles in the Big Leagues

Seattle Mariners shortstop/third baseman Colt Emerson went 1-for-3 in Friday's 2-0 win over the Kansas City Royals, raising his average from .091 to .143 on the season. The Mariners top prospect was hitless in his previous six at-bats before hitting a single during the top of the fifth inning. Overall, Emerson has struggled since his promotion to the big leagues on May 17, slashing .143/.294/.357 with a home run, three RBI, and two runs scored across five games. He is hitting in the bottom of the order and continues to handle third base for the Mariners while Brendan Donovan (groin) is on the injured list with a left groin muscle strain. Emerson is an above-average hitter and slashed .307/.405/.515 with nine home runs, nine steals (on 11 attempts), and an 11.3% walk rate in High-A, Double-A, and Triple-A last season. The 22-year-old also hit seven home runs and stole 10 bases in just 38 games in Triple-A Tacoma before getting the call to the show in May. Despite struggling early on in the majors, Emerson remains a must-add in all leagues due to his incredible upside and is only rostered in 23% of Yahoo Fantasy leagues.

May 23

J.P. Crawford • SS • Mariners

J.P. Crawford Back From Nagging Triceps Injury on Friday

Seattle Mariners shortstop J.P. Crawford (triceps) is back at shortstop and will hit leadoff for the M's in Friday's series opener in Kansas City against the Royals and left-hander Noah Cameron, according to MLB.com. Crawford has missed a couple of games this week with a sore triceps muscle after he was initially hit by a pitch on Sunday in the series finale against the San Diego Padres, but he's back in action to kick off the weekend in KC. Rookie infielder Colt Emerson will shift back to third base and will hit ninth in the batting order against the Royals. The 31-year-old Crawford could be in danger of losing playing time on Seattle's infield this year if he continues to struggle at the plate. He enters Friday's game with a weak .210/.358/.364 slash line, .722 OPS, six home runs, 16 RBI, 23 runs scored, and one stolen base in 143 at-bats. With below-average power and speed at a premium position in fantasy, Crawford isn't much to look at. He is currently rostered in only 11% of Yahoo leagues. Crawford has gone 2-for-3 in his three career at-bats against Cameron, but he's gone 7-for-41 (.171) with one of his six homers this year against lefty pitchers.

May 22

Kade Anderson • SP • Mariners

Is Kade Anderson Still the Top Pitching Prospect to Stash After Season-Worst Outing?

Seattle Mariners pitching prospect Kade Anderson remains an elite option to stash among pitchers despite his recent five-run showing. On May 15, Anderson's near-perfect start to his professional career came to a halt as he allowed a season-worst five runs and six hits to Northwest Arkansas. However, prior to this showing, the former LSU superstar was on an incredible pace at Double-A and was making a case to join the majors much sooner than anticipated. Over his first 30 frames, the lefty struck out 47 hitters while walking five batters with a dominant 0.60 ERA and a 0.67 WHIP. However, the only concern for Anderson's redraft value is his path to the majors. While his upside remains high, he has a difficult path to joining the MLB roster, pitching on a deep Seattle team that already has six proven starters on the MLB roster. Since he will likely have to wait for multiple injuries to earn the call, he is best left for 12-team leagues that have several N/A spots.

May 22

José A. Ferrer • RP • Mariners

Jose A. Ferrer Grabs Third Save, Seeing Value Increase in Deeper Leagues?

Seattle Mariners relief pitcher Jose A. Ferrer struck out the side in the ninth inning on Wednesday to close out his team's 5-4 win over the White Sox. He allowed a home run to Randal Grichuk to lead off the inning before fanning Munetaka Murakami, Derek Hill, and Colson Montgomery to end the game. Ferrer has allowed five earned runs in his 23 2/3 innings this season for a 1.90 ERA and 2.56 FIP to go with his 22 strikeouts. The young lefty has established himself as one of the team's top setup options in front of Andres Munoz, who pitched on both Monday and Tuesday. Ferrer also pitched in both those contests but needed only four pitches Tuesday before giving the ball to Munoz, who was charged with a blown save. While Munoz is one of the top closers in the game and will likely get a long leash, Ferrer is a very effective setup option who can step in and close if needed. In deep leagues where setup men have value, Ferrer is definitely one of the better widely available options to consider from the waiver wire.

May 21

J.P. Crawford • SS • Mariners

J.P. Crawford Scratched on Wednesday With Triceps Soreness

Seattle Mariners shortstop J.P. Crawford (triceps) has been scratched from the starting lineup for Wednesday's game against the visiting Chicago White Sox due to a sore triceps muscle, according to Ryan Divish of The Seattle Times. It was bothering Crawford when he tried to play catch. Rookie infielder Colt Emerson will take over at the 6 and will bat eighth, with Patrick Wisdom slotting in at third base and seventh in the batting order versus White Sox right-hander Sean Burke. The injury stems from when Crawford was hit by a pitch in Sunday's series finale against the San Diego Padres, forcing him from that contest early. It's still bothering him a bit, but he should be able to return for Friday's series opener against the Kansas City Royals after a scheduled day off on Thursday. For now, fantasy managers should consider Crawford day-to-day. The 31-year-old veteran offers very minimal power and speed, mostly making him a fantasy option for middle-infield depth in deeper fantasy baseball formats. Crawford is hitting only .210 (30-for-143) on the year with six home runs, 16 RBI, 23 runs scored, and a stolen base for the M's.

May 20

Cole Young • 2B • Mariners

Is Cole Young Still Worth Targeting on the Waiver Wire Amidst Current Cold Streak?

Across 196 plate appearances so far this season, Seattle Mariners second baseman Cole Young has hit .240/.316/.349 with three home runs, 26 RBI, 20 runs scored, and two stolen bases. The 22-year-old has taken over as the everyday second baseman in Seattle and is providing stellar defense, which should keep his playing time secure. However, after posting a .777 OPS through the end of April, Young has come crashing back down to earth in May. Across 70 plate appearances so far this month, Young is hitting .159/.243/.222 with a 25.7% strikeout rate. Despite Young's struggles, his .254 xBA and .400 xSLG suggest he's run into some tough luck at the plate. While Young may not stand out in any one fantasy category, he could provide value as an accumulator once he pulls out of his current skid. In deeper leagues, Young could be a worthy buy-low target on the waiver wire.

May 20

Kade Anderson • SP • Mariners

Kade Anderson Still a Must-Stash After Rough Outing?

Seattle Mariners pitching prospect Kade Anderson was the third-overall selection in last year's MLB Draft, which comes with some high expectations, but the southpaw has exceeded even that lofty outlook early on. The LSU product has struck out 51 batters in just 34 innings pitched (13.5 K/9), walking only 4.0 percent of batters he's faced (37.1 percent K-BB%), and producing a sterling 1.85 ERA through his first seven starts to his professional career at Double-A Arkansas. That pristine ERA even includes the five earned runs he yielded in his latest start; he allowed only two earned over his first six starts. Despite the rough outing, the Mariners' second-ranked prospect remains one of the top pitchers to stash in fantasy leagues. A promotion to Triple-A should not be far off, and with the expectation that the lefty will be able to compete at that level, an MLB debut should be in the cards later this season. There is not an opening in the current Seattle rotation anyway, which should give the 21-year-old some additional time to develop, but given how quickly he could get the hook to the majors and his ability to pile up the strikeouts, he should be viewed as a high-end pitcher to stash right now.

May 20

Colt Emerson • 3B • Mariners

Colt Emerson Launches First Career Home Run, Immediately Holding Must-Add Value?

Seattle Mariners shortstop/third baseman Colt Emerson only needed two career games to make an impact as he hit his first MLB homer on Monday night in his team's 6-1 win over the White Sox. Emerson went 1-for-4 with the eighth-inning three-run blast. He started each of the last two games at the hot corner for the Mariners, who are set to give him a long look at that spot with Brendan Donovan (groin) on the injured list. Emerson is just 20 years old but hit .255 with seven homers and 10 stolen bases in his 38 games in Triple-A before his promotion. He is a top-10 prospect in all of baseball (according to MLB.com) and looks ready to make an immediate impact. In mixed leagues, he's a nice grab if still available, although there isn't a clear spot for him when Donovan returns. Emerson has a solid plate approach, but he did have a 27.2% K% in Triple-A. He has the tools to be a great fantasy contributor if he keeps his strikeouts under control and climbs to a more prominent spot in Seattle's batting order.

May 19

Luis Castillo • SP • Mariners

Luis Castillo Operating as Bulk Reliever on Tuesday, Should Managers Cut Ties?

Seattle Mariners right-hander Luis Castillo is slated to work as a piggyback reliever behind Mariners starter Bryce Miller on Tuesday against the Chicago White Sox, per Adam Jude of The Seattle Times. While Castillo has been one of the more dependable starting pitchers in baseball for nearly a decade, this move to the bullpen is a result of his brutal start to 2026. Across 44 innings (nine starts) so far this year, Castillo has recorded a 1-4 record with a 6.34 ERA, 1.57 WHIP, and 43 strikeouts. Miller opened 2026 on the injured list due to an oblique injury, but the combination of his return and Mariners right-hander Emerson Hancock's breakout may make it difficult for Castillo to rejoin the rotation. Even if the veteran gets another chance, his career-worst 13.4% K-BB rate could be an indicator that his time as a fantasy-relevant starting pitcher has come to a close.

May 18

J.P. Crawford • SS • Mariners

J.P. Crawford Back in Monday's Lineup Against White Sox

Seattle Mariners shortstop J.P. Crawford (triceps) is back in the starting lineup for Monday's series opener against the visiting Chicago White Sox, batting leadoff against left-hander Noah Schultz, according to MLB.com. Crawford was hit by a pitch in his right triceps muscle on Sunday against the San Diego Padres and was pulled early as a precaution, but he's back in there a day later and is ready to roll. The 31-year-old former 16th overall pick by the Philadelphia Phillies in 2013 isn't much to look at in fantasy from an offensive perspective, and he's only rostered in 13% of Yahoo leagues. To start his 10th year in the big leagues in 2025, Crawford has hit just .216 (30-for-139), although he does have six home runs, 16 RBI, 23 runs scored, and a stolen base in 40 games across 171 plate appearances. Crawford's career high in home runs is 19 back in 2023, and he has never stolen double-digit bases in his nine-plus seasons.

May 18

Kade Anderson • SP • Mariners

Is Kade Anderson Entering Must-Stash Territory?

Seattle Mariners top pitching prospect Kade Anderson has fully put himself in must-stash territory, given his incredible start to his first professional campaign. Last year's No. 3 overall pick was sent to Double-A to begin his professional career and has been nothing short of incredible. With Arkansas, the southpaw has flashed incredible upside, logging 34 innings to the tune of a 1.85 ERA and a 0.76 WHIP. During this dominant start to his career, the left-hander has struck out 51 hitters while walking just five total batters. Over his first 30 frames, Anderson held a near-perfect 0.60 ERA before surrendering a season-high five runs in his most recent outing on May 15. The lone concern for Anderson is that the current MLB roster has a full rotation without a clear opening for Anderson. However, in the event of an injury, the former LSU superstar could get the call and become a must-start option for fantasy. For now, he is an elite stash option in all 12-team leagues ahead of Week 8.

May 18

Colt Emerson • 3B • Mariners

Colt Emerson Holds Must-Add Value Ahead of Full-Time Role in Seattle

Seattle Mariners infield prospect Colt Emerson was recently promoted to the MLB roster ahead of Sunday night's contest and is set to become the primary third baseman with Brendan Donovan on the shelf. In his MLB debut on Sunday night, Emerson was placed in the nine-hole and scored one run and drew a walk while going 0-for-2 at the dish. Emerson was in contention to break camp with the MLB roster but was instead optioned to the top club in the Seattle system to put the finishing touches on his development. Through his first 38 games with Tacoma this summer, Emerson has posted a strong .255/.347/.469 slash line with eight doubles, seven home runs, and 10 stolen bases. However, since the start of May, Emerson has seen his production soar, posting a .288 AVG and .840 OPS. While it may take the team's No. 1-ranked prospect time to adjust to MLB pitching, he should be given nearly an everyday role, which makes him a priority target in all standard leagues ahead of Week 8, given his five-category skill set.

May 18

J.P. Crawford • SS • Mariners

J.P. Crawford Leaves Early After Hit-by-Pitch

Seattle Mariners shortstop J.P. Crawford (arm) left Sunday's contest against the Padres early after getting hit by a pitch in the third inning. San Diego pitcher Lucas Giolito caught Crawford with a 92 MPH fastball on the right tricep. Crawford stayed in the game but was pulled ahead of the fifth inning and replaced at shortstop by Leo Rivas. Per Daniel Kramer, Crawford was left with a contusion that made extending his arm difficult. So far this season, Crawford has been lagging behind his expected stats, hitting just .216 compared to his xBA of .263. If he misses time, Rivas doesn't have much more to offer fantasy managers, as he is slashing a meager .131/.263/.172.

May 18

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