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Reese Olson SP | DET
Tigers' Reese Olson: Mixed results in first start
Olson (0-1) took the loss against the Dodgers on Saturday, allowing four runs on four hits and two walks while striking out five batters over 4.2 innings.
Olson allowed a tolerable six baserunners -- including one on an intentional walk -- in his 4.2 innings, but three of the four hits against him went for extra bases. He entered the fifth frame holding his own in a 2-2 tie, but a two-out, two-run double by Teoscar Hernandez marred Olson's stat line and lined him up to take the loss. The right-hander did manage to notch five strikeouts and get 10 whiffs, so there were some positives to take away despite the defeat. Olson's second start of the campaign is tentatively scheduled to be a considerably softer matchup against the White Sox next weekend.
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Spencer Arrighetti SP | TOR
Astros' Spencer Arrighetti: Fans five in quality start
Arrighetti (1-0) got the win Saturday against the Mets, allowing one run on one hit and two walks while striking out five across six innings.
Arrighetti retired the 12 straight batters after allowing a pair of baserunners in the first inning and held a 1-0 lead heading into the sixth. He gave up his lone run when he fielded a groundball from Juan Soto and casually tossed it to first base, which allowed Jose Siri to dash to home plate and barely beat out the tag. It was the only blemish in what was a strong start for Arrighetti, who is tentatively slated to start against the Twins on the road next week.
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Roki Sasaki SP | LAD
Dodgers' Roki Sasaki: Struggles with control again
Sasaki completed 1.2 innings against Detroit in a no-decision Saturday, allowing two runs on three hits and four walks while striking out two batters.
As he did in his first big-league start, Sasaki battled his control while running up his pitch count. The right-hander needed 61 pitches to retire five batters Saturday and threw just 32 of those offerings for strikes. He's now issued nine free passes over just 4.2 frames in his first two major-league starts, though he's gotten away with yielding a relatively modest three runs over that span. Sasaki averaged just 2.0 walks per nine innings during his four seasons in Japan, so there's reason to believe that his early control issues will be corrected in time. However, until he is able to throw strikes more consistently -- especially with his offspeed offerings -- Sasaki figures to struggle to go deep into games.
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Brandon Pfaadt SP | ARI
Diamondbacks' Brandon Pfaadt: Takes loss despite quality start
Pfaadt (0-1) took the loss against the Cubs on Saturday, allowing three runs on six hits and one walk while striking out five batters over six innings.
Pfaadt held Chicago scoreless for three frames before giving up a run in the fourth inning. The Cubs tagged him for two more runs on a Kyle Tucker homer in the fifth, and Arizona was never able to catch up. Pfaadt was pretty efficient in completing six frames on 78 pitches, and he gave his fantasy managers a boost with a quality start despite the loss. His second start of the campaign is expected to come against Washington next week.
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Shota Imanaga SP | CHC
Cubs' Shota Imanaga: Shines in quality start
Imanaga (1-0) tossed seven innings in a win against Arizona on Saturday, allowing one run on three hits and two walks while striking out four batters.
Imanaga fell behind when he gave up a run in the second inning, but that was the only time the Diamondbacks managed to cross the plate while he was in the game. The southpaw threw 91 pitches -- 63 of which were strikes -- and induced 14 whiffs in his first victory of the campaign. Imanaga has surrendered just one run over 11 frames despite posting a mediocre 6:6 K:BB across his first two starts of the year.
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Erick Fedde RP | CHW
Cardinals' Erick Fedde: Quality start against Twins
Fedde (1-0) picked up the win in Saturday's 5-1 victory over Minnesota, allowing one run on two hits over six innings. He struck out two without walking a batter.
While Fedde wasn't dominant, the right-hander generated plenty of weak contact en route to a quality start in his 2025 debut. He tossed an efficient 73 pitches (47 strikes) before exiting, picking up where he left off after a successful return from the KBO in 2024. Fedde is scheduled to make his next start on the road next weekend in Boston.
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Joe Ryan SP | MIN
Twins' Joe Ryan: No-decision in 2025 debut
Ryan came away with a no-decision in Saturday's 5-1 loss to the Cardinals, allowing one run on five hits over five innings. He struck out five without walking a batter.
The right-hander fired 55 of 81 pitches for strikes before exiting with the game tied 1-1, but the Twins' bullpen quickly fell apart afterward. Injuries limited Ryan to 135 innings over 23 starts in 2024, so staying healthy will be his top priority this year. The 28-year-old should be effective when he is on the mound though -- over three seasons as a regular member of Minnesota's rotation, Ryan sports a 3.92 ERA, 1.09 WHIP and 10.04 K/9. He lines up to make his next start at home next week against the Astros.
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Tyler Mahle SP | ATL
Rangers' Tyler Mahle: Records five outs in no-decision
Mahle didn't factor into the decision in Saturday's 4-3 win over the Red Sox. He allowed one run on two hits and four walks while striking out three over 1.2 innings.
Mahle walked four of the 11 batters he faced Saturday and was taken out of the game after giving up a bases-loaded walk to Rafael Devers in the second inning. Only 30 of Mahle's 61 pitches found the strike zone, and the Rangers were forced to turn to the bullpen for the final 7.1 frames of the game. He'll look to bounce back in his next outing and is lined up to face the Rays at home next week.
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Jonathan Cannon RP | CHW
White Sox's Jonathan Cannon: Settles for no-decision Saturday
Cannon came away with a no-decision in Saturday's 1-0 loss to the Angels, giving up four hits and three walks over five scoreless innings. He struck out five.
The 24-year-old righty engaged in a pitchers' duel with Jose Soriano in each hurler's 2025 debut, but Cannon was lifted after 85 pitches (53 strikes) and had to watch Mike Clevinger give up the game's only run in the eighth inning. Cannon held his own as a rookie last year, but his fantasy ceiling is limited given his inability to miss bats consistently and his team context. He lines up to make his next start on the road next weekend in Detroit.
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Walker Buehler SP | SD
Red Sox's Walker Buehler: Tagged with loss in team debut
Buehler (0-1) came away with the loss against the Rangers on Saturday. He allowed four runs on seven hits while striking out three across 4.1 innings.
Buehler's Red Sox debut got off to a rough start when he gave up two runs in the first inning. He steadied himself over the next two frames before giving up a solo home run to Adolis Garcia in the fourth inning and allowing a final run in the fifth. Buehler left the mound having thrown 48 of 80 pitches for strikes and induced just two ground outs. He's tentatively slated to face the Cardinals at home next week.