Quinn Mathews Fantasy Stats

St. Louis Cardinals pitching prospect Quinn Mathews turned in another stellar effort at Triple-A on Friday evening and is on the verge of reaching the major leagues. Facing Triple-A Durham, the southpaw struck out an impressive 10 hitters over seven innings of three-hit ball. He walked only three batters and allowed one unearned run. Since May 28, the Stanford product has been among the most dominant pitchers at the top level in the minors and is making a strong case to join the Cardinals. During these noted 56 1/3 innings, the left-hander has posted a sharp 1.60 ERA with a 0.83 WHIP while holding a 67:22 K:BB. While there may not be a clear opening for the left-hander, his recent surge makes him a top prospect to stash among pitchers, as his debut could occur in early August.

St. Louis Cardinals pitching prospect Quinn Mathews appears to be on the precipice of a major league debut after a strong season at Triple-A Memphis. The southpaw has been rolling as of late, allowing two earned runs or fewer in eight of his last nine starts, but for the most part, he's been pitching well all year. Take away his worst three starts of the year, the Cards' sixth-ranked prospect owns a 1.89 ERA and 0.98 WHIP in the other 15 starts. Not to mention 101 strikeouts in 85 total innings pitched are also very usable for fantasy. Opponents are batting .171 off of him on the year, so if he can translate some of that success to the majors, he could be a productive pitcher for fantasy over the final two months of the season. Look for the 25-year-old to debut in the coming weeks, and managers in deeper 12-team leagues should consider stashing him in an NA spot ahead of time.

St. Louis Cardinals pitching prospect Quinn Mathews continued to impress in his latest start at Triple-A over the weekend, allowing just one earned run on three hits and one walk while striking out four over six innings pitched. It was the eighth time in his last nine starts that the southpaw yielded two earned runs or fewer, pitching to a 1.82 ERA, 0.83 WHIP, and a 20.7 K-BB% over that stretch. For the season, the Cards' sixth-ranked prospect owns a 3.39 ERA, 1.16 WHIP, and a 15.0 percent K-BB% in 18 starts, but this recent nine-game stretch could give the team plenty of confidence in giving the 6-foot-5 hurler his long-awaited shot in the majors. The 25-year-old has plenty of strikeout potential, so if he can just limit the walks as he has in this recent run of success, then there is enough fantasy appeal here to make the Stanford product worth stashing in deeper 12-team leagues ahead of his eventual call-up.

St. Louis Cardinals left-handed pitching prospect Quinn Mathews is red-hot in July and is coming off an excellent pitching outing on Saturday for Triple-A Memphis. Mathews went six innings and allowed just one run on three hits with four strikeouts in a no-decision. With his start on Saturday, Mathews lowered his July ERA to 1.42 with a 0.74 WHIP in three starts during the month. Altogether in Memphis this year, Mathews is 4-3 overall with a 3.39 ERA and 1.16 WHIP and 101 strikeouts in 85 innings pitched. A fourth-round pick out of Stanford, Mathews has risen to the Cardinals' No. 6 overall prospect. The strikeout upside of Mathews makes him a tantalizing prospect on the waiver wire, and fantasy managers should act accordingly. His upside makes him worth an early shot, and he could pay off with a strong second half.

St. Louis Cardinals pitching prospect Quinn Mathews has been striking out batters at a high rate all season in Triple-A Memphis, making him a high-upside option on the waiver wire. Mathews has punched out 97 batters over 79 innings pitched at Memphis this season, compiling a 3.53 ERA and 1.20 WHIP as he continues to make a case to join the St. Louis rotation. The left-hander is the No. 6 overall prospect for the Cardinals, so he has the pedigree; he is just waiting for an opening at the major league level. But now might be the time to act for fantasy managers, as his high strikeout upside makes him a desirable pitcher on the free-agent market. In June, Mathews posted a 2.05 ERA over five starts, and so far in July, he has posted a 1.38 ERA over two starts. He has been picking things up lately at Triple-A and proving he could be ready for a shot with the Cardinals. At 25 years old, his time might be now for fantasy, and he has solidified himself as a top stash target among pitching prospects.

St. Louis Cardinals left-handed pitching prospect Quinn Mathews turned in another stellar showing at the Triple-A level this past week and has potentially solidified himself as the top pitching prospect to stash ahead of the All-Star break. On July 9, the left-hander logged seven innings (which marked a season high) with just two hits allowed, no runs, and a sharp 7:2 K:BB. Since May 28, the former Stanford standout has been borderline elite at the top club, posting a 1.87 ERA, 0.85 WHIP, and a 53:18 K:BB over 43 1/3 innings of work. Prior to this surge, the 25-year-old posted a much higher 5.55 ERA over the first 35 2/3 innings. Given his current run at Triple-A, Mathews has put himself into the elite tier of stash candidates as his MLB debut could come shortly after the All-Star break.

St. Louis Cardinals pitching prospect Quinn Mathews has been pitching well all season for Triple-A Memphis, but has really been making the case for a major league debut since late May. Over his last seven starts, the Cards' sixth-ranked prospect has pitched to a 2.23 ERA, 0.91 WHIP, and a 21.4 percent K-BB% with 46 strikeouts in 36 1/3 innings pitched. The southpaw's opponent batting average is just .178 on the year, but he has been prone to allowing home runs this season, with a gaudy 24.0 percent HR/FB%, and together with a 15.2 percent walk rate, it has likely factored into why he hasn't already made his debut in the majors. But with zero walks allowed in his last start, perhaps he's finally ready for the jump. The 25-year-old could be up by August, and with his strikeout potential, he could be a worthwhile stash option in deeper 12+ team leagues for managers looking for pitching help.

St. Louis Cardinals left-handed pitching prospect Quinn Mathews is showing off his upside this season. In 15 starts at Triple-A Memphis, Mathews has a 4-3 record with a 3.95 ERA and 83 strikeouts in 66 innings pitched. Since serving up four runs on May 22, the southpaw has logged 30 1/3 innings to the tune of a sharp 2.08 ERA and a 0.89 WHIP. The high strikeout upside is the first thing that stands out and makes him extremely enticing as a fantasy starter. He has allowed 11 home runs, which is fairly high at this point in the season, but his overall numbers are very good. The fourth-round pick out of Stanford is eyeing a promotion to St. Louis and is looking for a spot in the rotation. Right now, the MLB rotation has five solid starters, so a call-up could depend on an injury. But Mathews has proven himself at the Triple-A level this season and could be an excellent addition in deep leagues as a wait-and-see target.

St. Louis Cardinals left-handed pitching prospect Quinn Mathews has begun to turn the corner at Triple-A and is quickly emerging as a top prospect to stash among pitchers. Mathews turned in a dominant debut season in the St. Louis system in 2024 but has yet to return to that level of play. In 2025, he logged only 99 innings and saw those troubles linger early in 2026. Through his first 35 2/3 innings this season, the southpaw posted a hefty 5.55 ERA with a 1.63 WHIP. During this stint, Mathews posted a rough 44:30 K:BB. However, over his last 21 innings of work (four starts), the former Stanford standout has held a stellar 1.71 ERA with a much-improved 28:9 K:BB. While he may need to show this success over a longer stretch, he has a clear path to the majors given St. Louis' weak rotation. He is a viable target in the 12+ team leagues ahead of Week 13, but can quickly enter priority stash range if he turns in a strong conclusion to June.

St. Louis Cardinals pitching prospect Quinn Mathews has started to turn it on over his last two starts with Triple-A Memphis, allowing just four hits and two walks while striking out 15 across 12 scoreless innings. The 25-year-old's overall line for the season is less appealing, as he's pitched to a 4.01 ERA with a 15.8% walk rate across 51 2/3 innings (12 starts). Still, Mathews is considered to be one of the top pitching prospects in the Cardinals' system and could be proving that he's figured something out with his recent performance. With St. Louis in the thick of the National League playoff picture and searching for high-end starting pitching at the big-league level, it could be only a matter of time before Mathews is called up for his MLB debut. In deeper leagues, fantasy managers may want to consider stashing Mathews off the waiver wire.