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Merrill Kelly SP | ARI
Diamondbacks' Merrill Kelly: Strikes out eight in win
Kelly (4-2) allowed a run on eight hits and struck out eight without walking a batter over seven innings to earn the win over the Giants on Monday.
Kelly was just a little better than opposing starter Justin Verlander in this pitching duel. The 36-year-old Kelly has now allowed exactly one run in five of his nine outings this season, and this start ended a stretch of four appearances without a win. The right-hander trimmed his ERA to 3.71 with a 1.06 WHIP and 41:12 K:BB across 51 innings this season. He's projected to make his next start at home versus the Rockies this weekend.
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Jhony Brito RP | SD
Padres' Jhony Brito: Gets season-ending surgery
Brito underwent a UCL internal brace surgery and a repair of his flexor tendon last month and will miss the entire 2025 season, AJ Cassavell of MLB.com reports.
Brito was moved to the 60-day injured list at the beginning of April, but Cassavell's report provides an explanation for why the Padres made that transaction. He's facing a lengthy recovery and will shift his focus on preparing for the 2026 season after going under the knife.
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Cristopher Sanchez SP | PHI
Phillies' Cristopher Sanchez: Fans eight in quality start
Sanchez did not factor in the decision during Monday's loss to St. Louis. He allowed two runs on four hits and three walks while striking out eight over six innings.
Sanchez tossed three scoreless frames before Pedro Pages brought home a run with a fielder's choice in the fourth inning. Ivan Herrera later drilled a solo homer in the sixth. Sanchez has allowed two or fewer earned runs in seven of his eight outings this season, including an active six-start streak. He produced 13 whiffs Monday, including eight with his changeup. Sanchez is sporting an impressive 2.91 ERA with a 52:17 K:BB across 43.1 innings. He's in line for a home matchup against the Pirates this weekend.
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Michael Wacha SP | KC
Royals' Michael Wacha: Tallies third win
Wacha (3-4) earned the win Monday at Houston, allowing two runs on eight hits and two walks over 6.1 innings. He struck out three.
The veteran right-hander limited damage in this 88-pitch performance, scattering six singles and two doubles while generating only six whiffs. Wacha collected his fourth consecutive quality start, as he's pitched to a 1.75 ERA, 1.09 WHIP across 25.2 innings during that span. Through 51.2 total frames, the 33-year-old sports a 2.96 ERA, 1.20 WHIP and 37:16 K:BB. He is currently slated to make his next start against one of his former teams, the Cardinals, at home this weekend.
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Matthew Liberatore SP | STL
Cardinals' Matthew Liberatore: Falls short of quality start
Liberatore did not factor in the decision during Monday's win over Philadelphia. He allowed two runs on seven hits and a walk over 5.1 innings while striking out four.
Liberatore kept the Phillies scoreless until Edmundo Sosa's RBI infield single in the fourth inning. Liberatore gave up another run in the sixth inning and was lifted before he could qualify for a quality start. He threw 56 of 80 pitches for strikes and generated 11 whiffs. Only one swinging strike came via the fastball, but his average velo was slightly up from 94.5 mph to 95 mph. Liberatore owns a solid 3.11 ERA with a 42:7 K:BB through 46.1 innings this season. He's projected for a start in Kansas City this weekend.
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Paul Skenes SP | PIT
Pirates' Paul Skenes: Gives up one run in no-decision
Skenes did not factor into the decision against the Mets on Monday, allowing one run on six hits and three walks while striking out six across six innings.
Skenes was able to pitch himself out of trouble for most of the night, with his lone blemish coming in the fourth inning on a Jeff McNeil RBI double. Skenes generated nine whiffs and 16 first-pitch strikes on 92 pitches and managed to log his sixth quality start of the season. Across 54.2 innings this season, the 22-year-old ace has a 2.63 ERA and 1.01 WHIP, which rank seventh and fifth, respectively, in the National League among qualified starters. Skenes is slated to face the Phillies on the road this weekend.
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Freddy Peralta SP | TB
Brewers' Freddy Peralta: Yields four runs
Peralta (4-3) allowed four runs on four hits and three walks over 5.1 innings Monday, striking out four and taking a loss against Cleveland.
Peralta delivered three scoreless frames before Gabriel Arias ripped a three-run double in the fourth inning. Kyle Manzardo later knocked Peralta out of the game with an RBI single in the sixth. Peralta made his first start since May 4 due to a minor groin issue and it's possible that was a lingering issue in Monday's disappointing outing. He now owns a 2.66 ERA with a 52:18 K:BB through 50.2 innings this season. Peralta is currently lined up to face the Orioles at home next week.
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David Peterson SP | CHC
Mets' David Peterson: Strikes out seven in no-decision
Peterson did not factor into the decision Monday against the Pirates, allowing two runs on five hits and three walks while striking out seven across six innings.
After giving up a solo homer to Isiah Kiner-Falefa in the second inning, Peterson was able to rebound by retiring the next 10 batters he faced (including four strikeouts) before being tagged for a second run in the seventh frame. Peterson was able to generate 17 whiffs on 100 pitches (67 strikes) en route to his second straight quality start and fourth of the season. He has a 3.05 ERA, 1.35 WHIP and 43:16 K:BB across 44.1 innings and is slated to take on the Yankees on the road this weekend.
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Tyler Mahle SP | ATL
Rangers' Tyler Mahle: Breezes to fourth win
Mahle (4-1) earned the win Monday versus Colorado, allowing one run on four hits and one walk over 6.1 innings with five strikeouts.
The Texas right-hander was never in trouble during this 88-pitch outing against the feeble Rockies. The Colorado lineup managed only one extra-base hit off Mahle, a Hunter Goodman double in the seventh inning, as the Rangers starter tired. Mahle's brilliant run continues, as he now owns a 1.47 ERA, 0.96 WHIP and 37:16 K:BB across 49 innings. He currently lines up to make his next start against the Astros at home this weekend.
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Chase Dollander SP | COL
Rockies' Chase Dollander: Quality start despite loss
Dollander (2-4) took the loss Monday at Texas, yielding two runs on one hit and three walks over six innings. He struck out seven.
The Colorado rookie produced his best outing of the season, collecting his first quality start and matching his previous high with seven punchouts. Dollander stymied the Rangers until the sixth inning when Wyatt Langford cracked a two-run homer to give Texas the lead. Through 34 innings, Dollander sports a 6.88 ERA, 1.47 WHIP and 32:16 K:BB. He looks to build upon this performance in his next start, currently scheduled to be at Arizona this weekend.