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Cesar Perdomo SP | SF
Giants' Cesar Perdomo: Flops against Friars in first loss
Perdomo (0-1) took the loss Saturday, coughing up five runs on 10 hits and two walks over 4.2 innings as the Giants were downed 7-6 by the Padres. He struck out three.
After a scoreless first frame, Perdomo got tagged for at least one run in each inning he remained on the mound until finally getting chased after 74 pitches (48 strikes). With the Giants out of the playoff picture, one bad performance in his second career start probably isn't going to cost the 24-year-old southpaw his spot in the rotation as the team auditions players for 2027. Perdomo will take a 3.68 ERA, 1.36 WHIP and 11:4 K:BB over 14.2 MLB innings into his next start, which is set to come on the road next weekend against the Dodgers.
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Brandon Pfaadt SP | ARI
Diamondbacks' Brandon Pfaadt: Lit up for six runs in loss
Pfaadt (7-3) allowed six runs on 10 hits and a hit batsman while striking out seven and walking none over 6.2 innings, taking the loss versus the Rangers on Saturday.
Pfaadt again provided good length, but he wasn't able to collect a third straight quality start. He has given up 20 runs over 31.1 innings across his last five starts, going winless in that stretch. For the season, the right-hander is at a 3.77 ERA, 1.17 WHIP and 84:29 K:BB through 124 innings over 27 games (17 starts). Pfaadt is projected to make his next start at home versus the Yankees.
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Kyle Leahy SP | STL
Cardinals' Kyle Leahy: Effective in short start
Leahy allowed two hits and struck out four without walking a batter over three scoreless innings in a no-decision versus the White Sox on Saturday.
Leahy provided good work in another short start, throwing 26 of 38 pitches for strikes. His pitch count continues to come down as part of his workload management in September, and that will make it nearly impossible for him to collect wins unless he moves to bulk relief. Through 28 starts this year, Leahy has a 3.33 ERA, 1.31 WHIP and 128:38 K:BB over 135 innings. He is tentatively projected to work in tandem with Cooper Hjerpe again at home versus the Nationals in his next outing.
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Michael King SP | SD
Padres' Michael King: Bags 11th win
King (11-9) picked up the win in Saturday's 7-6 victory over the Giants, giving up three runs on five hits over seven innings. He struck out four without walking a batter.
The right-hander served up homers to Rafael Devers in the first inning and Shay Whitcomb in the second to account for all the damage against him, but King shut the door from there. He's reeled off seven straight quality starts, giving him 17 on the season, and over that sizzling streak he's produced a 1.81 ERA, 1.01 WHIP and 34:12 K:BB in 44.2 innings while going 5-1. King will look to stay locked in during his next outing, which lines up to come on the road next week in Colorado.
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Andrew Alvarez SP | WAS
Nationals' Andrew Alvarez: Blanks Halos in no-decision
Alvarez didn't factor into the decision Saturday, allowing one hit and four walks over seven scoreless innings in a 6-5, extra-inning win over the Angels. He struck out eight.
The 27-year-old southpaw delivered his best start yet in the majors, blanking the Halos over 97 pitches (61 strikes) while setting a career high in Ks and leaving the mound in line for his third win, only for the Nationals' bullpen to falter yet again. The quality start was Alvarez's third, with all of them coming since the beginning of August -- over eight outings during that stretch he's posted a 2.44 ERA, 0.97 WHIP and 41:19 K:BB in 44.1 frames. He'll look to stay sharp in his next start, which is scheduled to come on the road next weekend in St. Louis.
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Shane Drohan SP | MIL
Brewers' Shane Drohan: Hit hard in no-decision
Drohan didn't factor into the decision Saturday against the Reds, allowing five runs on five hits and two walks in 3.2 innings. He struck out four.
Drohan received plenty of run support, as the Brewers staked him to an early 4-0 lead, but he couldn't last long enough to qualify for the win Saturday. The rookie southpaw is showing signs of fatigue late in the season, conceding at least five runs while working four innings or fewer in consecutive outings. He'll try to right the ship his next time out in Baltimore, where he'll bring a 4.35 ERA, 1.33 WHIP and 119:41 K:BB over 118 innings.
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Brady Singer SP | CIN
Reds' Brady Singer: Lit up again in 14th loss
Singer (6-14) took the loss Saturday against the Brewers, allowing eight runs on eight hits and five walks in four innings. He struck out five.
Milwaukee pounced on Singer right away, tagging him for four runs in the first inning. The right-hander had given up more than four runs just three times in 2026 before his most recent two starts in September, during which he's coughed up a staggering 14 runs. He'll take a 5.38 ERA, 1.51 WHIP and 125:56 K:BB over 150.2 innings into a difficult home assignment versus the Dodgers.
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Tyler Mahle SP | ATL
Braves' Tyler Mahle: Smooth sailing in sixth win
Mahle (6-10) tallied the win Saturday against the Phillies, allowing one run on six hits and no walks in seven innings. He struck out six.
Mahle cruised to the victory Saturday, with Atlanta surging for eight runs in the fourth inning. The right-hander has been dealing on the mound in his new digs, surrendering two runs or fewer while pitching at least six innings in six of his last seven outings since joining Atlanta. He'll look to keep the good times going his next time out in Houston, where he'll carry a season 3.91 ERA, 1.25 WHIP and 127:43 K:BB over 138 innings.
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Tyler Phillips SP | MIA
Marlins' Tyler Phillips: Allows two homers in short outing
Phillips did not factor into the decision in Saturday's 4-3 win over the Dodgers, allowing two runs on two hits and three walks with three strikeouts over 3.2 innings.
Phillips allowed back-to-back homers in the first inning but did keep the Dodgers in check from there despite throwing just 37 of 68 pitches for strikes. It marked the first time the 28-year-old failed to complete at least four frames in a game he started since July 12, and he's now yielded three earned runs or fewer in five straight outings. He owns a 3.55 ERA, 1.33 WHIP and 96:51 K:BB across 119 innings this season and lines up for a road matchup with the Padres next weekend.
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Tyler Glasnow SP | LAD
Dodgers' Tyler Glasnow: Chased early in first loss
Glasnow (4-1) took the loss against the Marlins on Saturday, allowing four runs on five hits and four walks with seven strikeouts over four innings.
Glasnow suffered a three-run second inning and labored overall, throwing just 52 of 91 pitches for strikes and departing after walking two straight batters to open the fifth. While the 33-year-old has registered an impressive 28 punchouts through 22 innings (four starts) since returning from the injured list Aug. 25, he owns a 4.91 ERA during that stretch. He'll take a 3.50 ERA, 0.97 WHIP and 77:21 K:BB across 61.2 frames into a home matchup with the Giants next weekend.