George Klassen Fantasy Stats

Los Angeles Angels right-handed pitching prospect George Klassen showed some upside in his MLB debut on Sunday, but struggled to enjoy much consistency. Over a brief 2 2/3-inning outing facing the Mariners, Klassen would allow three hits, two earned runs, and allow a hefty five free passes. However, he would strike out four hitters. Much of his trouble came in the second frame when Leo Rivas hit a two-run single that scored outfielder Randy Arozarena and second baseman Cole Young. Fantasy managers should continue to monitor his status in the upcoming week, as the Angels may provide him another turn in the MLB rotation. Last summer, he spent most of his time at Double-A, logging 102 2/3 innings to the tune of a 5.35 ERA and a 1.48 WHIP. Given his shaky debut, managers should only consider adding Klassen in deeper 15-team leagues.

The Los Angeles Angels have selected the contract of right-handed pitching prospect George Klassen. He will be the Halos' starting pitcher on Sunday, making his MLB debut against the Seattle Mariners. Klassen was the Phillies' sixth-round pick in 2023, but he made his way to the Angels organization via trade in 2024. He posted an impressive 3.29 FIP and 11.05 K/9 at Double-A last year, but he did have an issue with walks. He was roughed up with a 7.94 FIP over 14 innings in spring training, but he posted a solid 4.2-inning start in Triple-A last week. He'll start for the Angels on Sunday after Ryan Johnson (illness) was scratched. Klassen throws an upper-90s fastball and puts effective break behind both his slider and cutter. It will be interesting to watch how his stuff plays against a star-studded Seattle lineup featuring Julio Rodriguez and Cal Raleigh.

The Los Angeles Angels announced on Friday that they optioned right-handed pitching prospect George Klassen to minor-league camp. Klassen, the team's No. 5 prospect per MLB Pipeline, allowed five earned runs on nine hits (three homers) while walking five and striking out 10 in 11 2/3 innings over his four Cactus League appearances. At Double-A Rocket City and Triple-A Salt Lake in 2025, Klassen had a 5.22 ERA and 1.46 WHIP with 134 strikeouts and 47 walks in 108 2/3 innings over 25 starts. The 24-year-old right-hander has some intriguing stuff with a dominant fastball and a couple of nasty breaking pitches, but the Angels want to see him have some more success on the farm before they bring him up to the big-league starting rotation. It was encouraging to see Klassen cut his walk rate last year as well. He's a power pitcher with a heater that reaches triple digits. Klassen should make his major-league debut in 2026, but for now, he's a high-upside pitching stash in AL-only and keeper leagues.

Los Angeles Angels right-handed pitching prospect George Klassen is a candidate to claim the final spot in the starting rotation, according to Rhett Bollinger of MLB.com. While veteran pitcher Alek Manoah opened camp as the favorite, his struggles in camp have opened the door for Klassen or Jack Kochanowicz to slide into a starting role. Klassen has logged eight innings over three appearances and struck out nine batters while carrying a 2.25 ERA with a 1.00 WHIP. Last summer, the former sixth-round selection from the 2023 MLB Draft spent the majority of his campaign with Double-A and tossed 102 2/3 innings with a 5.35 ERA and a 1.48 WHIP. He made a one-game appearance at Triple-A and logged six innings with two earned runs. Despite his lack of Triple-A experience, Klassen could hold late-round sleeper appeal in deeper formats if he were to earn a starting job.

Los Angeles Angels right-handed starting pitcher George Klassen will attend big-league spring training. The right-hander enters the 2026 campaign sitting as the team's No. 3-ranked prospect on MLB.com. Klassen was a sixth-round selection by the Phillies back in the 2023 MLB Draft and is now steps away from making the MLB Opening Day roster. In 2025, the Minnesota product spent most of his season at Double-A, where he logged 102 2/3 innings to the tune of a 5.33 ERA with a 1.48 WHIP. During this stint, he struck out 126 hitters while allowing 46 walks. However, over his last four outings at Double-A, he posted an elite 1.17 ERA, which earned him a one-game taste of Triple-A. If Klassen continues to perform well in camp, he could be in the mix to join the Angels early in the first half.

Los Angeles Angels right-handed pitching prospect George Klassen is a name to monitor during spring training. Klassen is currently considered the No. 3-ranked prospect in the system on MLB.com. In 2025, the right-hander spent the majority of the year in Double-A Rocket City before earning a brief six-inning stint at Triple-A Salt Lake. Across 102 2/3 innings at Double-A, the former sixth-round selection from the 2023 MLB Draft posted a hefty 5.35 with a 1.48 WHIP. However, over his last 23 innings at Double-A before earning the promotion, Klassen posted a dominant 1.17 ERA with 32 punchouts. At Triple-A, Klassen totaled eight strikeouts across this brief stint, while allowing two runs with one free pass. Given Los Angeles's weak pitching depth, Klassen could be in strong consideration for a promotion early in the season.

Los Angeles Angels pitching prospect George Klassen was promoted to Triple-A Salt Lake on Tuesday after spending the entirety of 2025 at Double-A. The Angels' third-ranked prospect posted a 5.35 ERA, 1.48 WHIP, and struck out 126 batters in 102 2/3 innings pitched (24 starts) this season, but had been better as of late, recording a 1.17 ERA, 1.26 WHIP, and a 21.4 percent K-BB% over his last four starts prior to the promotion. After being traded from the Phillies in August of last year, the former sixth-round draft pick registered a 16.9 percent walk rate in eight starts, but improved that to 10.0 percent in 2025, so there could be less reliever risk than there once had been. In his first start at Triple-A on Tuesday, the 23-year-old allowed two earned runs on six hits and one walk while striking out eight in six innings of work. He's worthy of consideration in dynasty leagues and could debut in the majors in 2026.

Los Angeles Angels right-handed pitching prospect George Klassen tossed six shutout frames en route to picking up the victory over Double-A Pensacola on Friday. In this outing, Klassen allowed just two hits and one walk. He struck out five. This was a nice bounce-back outing for Klassen as he allowed 14 runs (13 earned) over his last three starts (8 2/3 innings). However, prior to this slump, the No. 3-ranked prospect in the system posted a 3.86 ERA and a 1.21 WHIP over his first 25 2/3 innings of work. Through 40 1/3 total frames, Klassen has struck out 49 batters and held a modest 5.36 ERA. However, his slump in early June has inflated his ratios. Fantasy managers should continue to monitor his progression as the former sixth-round pick could earn a second-half taste of Triple-A.

Los Angeles Angels pitching prospect George Klassen tossed 5 1/3 shutout innings for Double-A Rocket City on Tuesday, allowing three hits and one walk while striking out nine batters. It marked the third consecutive dominant outing from the righty, who yielded just one earned run on 11 hits and three walks while striking out 22 over those three starts (13 1/3 innings). The 6-foot-2 hurler could pitch his way to Triple-A by season's end, but he isn't expected to make his big-league debut until sometime in 2026. Still, with a 34.9 percent strikeout rate in 26 minor-league starts, the Angels' third-ranked prospect is a player dynasty managers should be keeping tabs on.

Los Angeles Angels pitching prospect George Klassen tossed five innings of one-run ball on Wednesday against Double-A Montgomery. He allowed five hits, no walks, and tallied a season-best eight punchouts. This was a strong bounce-back outing for Klassen as he allowed five runs (zero earned) and six runs (all earned) over his first two starts of the season, respectively. Across those two outings, Klassen tallied just seven punchouts across five 2/3 innings of work. Klassen is considered the No. 3-ranked prospect in the Angels system on MLB Pipeline. Last summer, the Minnesota product split time with Low-A, High-A Jersey Shore before moving up to Double-A Rocket City. Across 93 total innings, Klassen held a solid 3.10 ERA with a 1.18 WHIP. He could be in the mix to make his Triple-A debut later this summer.