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Mariners' Julio Rodriguez: Swipes two bags Saturday
Rotowire
Rodriguez went 1-for-5 with a run and two stolen bases in a loss to the Padres on Saturday.
Rodriguez reached base just once, but he made the most of his eighth-inning single by stealing second and third base before coming around to score. The talented young outfielder hadn't swiped a bag in any of his previous 18 contests, so his fantasy managers will likely hope that his pair of thefts kick off a stretch of more frequent running. Rodriguez holds a .255/.320/.415 slash line with seven homers, 20 RBI, 23 runs and five stolen bases through 47 contests on the campaign.
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Mariners' Logan Gilbert: Serves up three homers in defeat
Rotowire
Gilbert (2-4) took the loss against San Diego on Saturday, allowing seven runs on five hits and two walks while striking out five batters over 6.2 innings.
Gilbert struggled to keep the ball in the park, as three of the five hits he gave up were homers. The right-hander surrendered just four home runs over his first seven starts, but he's now given up seven long balls across his past three outings. Gilbert did at least give the Mariners 6.2 innings of work, and he's completed at least six frames in each of his past three starts. However, the seven runs he allowed Saturday were his most in an appearance this season and pushed his ERA up from 3.78 to 4.45.
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Mariners' Brendan Donovan: Scratched due to load management
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Donovan (undisclosed) was scratched from Saturday's lineup against the Padres as part of a load-management decision by Mariners manager Dan Wilson, Daniel Kramer of MLB.com reports.
Donovan has been dealing with a lingering groin injury this season, which caused him to land on the 10-day injured list in late April. He was reinstated from the IL on May 7 and has gone 6-for-28 (.214) with two runs since his return, but Donovan is considered day-to-day in the short term. That means Leo Rivas should see more work at third base on days when Donovan is sidelined.
Garver was scratched from Saturday's lineup against the Padres due to lower-back tightness, Ryan Divish of The Seattle Times reports.
Jhonny Pereda ended up starting behind home plate Saturday, and it's unclear whether Garver will be available for Sunday's series finale. Cal Raleigh (oblique) landed on the 10-day injured list Thursday, so Pereda would be the Mariners' top catcher if Garver were to also miss extended time.
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Mariners' Mitch Garver: Late scratch Saturday
Rotowire
Garver was scratched from the lineup for Saturday's game against the Padres.
The Mariners have yet to explain why they removed Garver from the starting nine, but some clarity is likely to come in the near future. While he sits on the bench Saturday, Jhonny Pereda will start at catcher and bat eighth.
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Mariners' Brendan Donovan: Scratched Saturday
Rotowire
Donovan was scratched from the lineup ahead of Saturday's game against the Padres.
It's unclear why the Mariners took Donovan out of the lineup, but the team will likely offer an explanation in the near future. In the meantime, Leo Rivas will fill the void at third base and bat eighth.
Mariners' Randy Arozarena: Stays active on basepaths
Rotowire
Arozarena went 2-for-4 with a stolen base in Friday's 2-0 loss to the Padres.
Arozarena has gone 15-for-31 (.484) with four steals on five attempts over his last eight games. The outfielder's success at the plate is helping to fuel his work on the basepaths. He's successfully stolen 12 bases on 14 attempts this year, right in line with last year's 31-for-37 showing in steal attempts during the regular season. Arozarena has added four home runs, 16 RBI, 32 runs scored, 11 doubles and a triple while batting .305 with an .847 OPS. He's also sporting a .392 BABIP, which is 94 points higher than last year when he was held to a .238/.334/.426 regular-season slash line, so he's getting plenty of good luck in 2026.
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Mariners' Emerson Hancock: Submits quality start in loss
Rotowire
Hancock (3-2) allowed one run on five hits and a walk while striking out six over six innings to take the loss Friday versus the Padres.
Hancock was unlucky in this one, as the Padres were able to piece together a run in the fourth inning, and that was the difference. This was his sixth quality start in nine outings this season, and it's the fourth time he's avoided giving up a home run. Hancock is at a 3.02 ERA, 1.01 WHIP and 56:10 K:BB through 53.2 innings. For now, he appears to have secured his spot in the rotation, though he can't afford an extended rough patch while the Mariners have six healthy starters. Hancock is tentatively projected to make his next start at home versus the White Sox.
The Mariners will shut Raleigh (oblique) down for a week before re-evaluating him, Ryan Divish of The Seattle Times reports.
The results of Raleigh's MRI were reportedly better than the one he received earlier in the month, but after placing him on the injured list Thursday, the Mariners will give the slugging catcher a week to focus on rest and recovery. His period of no activity will almost certainly require him to spend more than the 10-day minimum on the shelf. In the meantime, Mitch Garver and Jhonny Pereda will share backstop duties for the M's.
Mariners' Luke Raley: Power surge continues in win
Rotowire
Raley went 2-for-5 with a three-run home run and an additional run scored in Thursday's 8-3 win over Houston.
The 31-year-old outfielder is surging in the power department, crushing five homers in his last eight games. Raley has firmly worked himself onto fantasy radars, slashing .300/.364/.657 with seven big flies, two doubles, one triple and 20 RBI over his last 26 contests (78 plate appearances) to raise his season OPS to .922. However, the left-handed-hitting Raley has taken a mere four at-bats versus southpaws this year, limiting his volume potential and upside.
Mariners' Luis Castillo: Finally gets into win column
Rotowire
Castillo (1-4) earned the win Thursday against the Astros, allowing three runs on four hits and three walks in 5.2 innings. He struck out six.
Castillo was working on a bounce-back start Thursday, giving up a lone run over his first five frames, but the Astros got to him for two more runs in the sixth inning to make his line more middling. The Mariners might have left the 33-year-old right-hander in the game for a bit too long considering that the hurler tossed a season-high 108 pitches. Castillo has now yielded at least three runs in three straight outings and six of his last eight, posting a disappointing 6.34 ERA, 1.57 WHIP and 43:16 K:BB over 44 innings in 2026. He's tentatively lined up to piggyback with Bryce Miller early next week versus the White Sox, which would mark Castillo's first career relief appearance if he works as the secondary pitcher.
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Mariners' Matt Brash: Ready for rehab games
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Brash (lat) will begin a rehab assignment with Triple-A Tacoma on Thursday, Daniel Kramer of MLB.com reports.
Brash resumed throwing off the mound earlier this week and is now ready to test things out in a game setting. The setup reliever has been out for all of May with right lat inflammation but appears close to a return if he can avoid a setback.
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Mariners' Brennen Davis: Healthy, mashing at Triple-A
Rotowire
Davis is slashing .286/.401/.571 with eight home runs, a 12.9 percent walk rate and a 23.8 percent strikeout rate in 34 games for Triple-A Tacoma.
The 26-year-old outfielder had an impressive spring training before suffering a hamstring injury in mid March. He has missed extensive time over the years, sapping much of his speed and athleticism, but Davis has developed into one of the most feared sluggers at Triple-A. He boasts a 51.7 percent Statcast hard-hit rate, a 144 wRC+ and .286 ISO while upping his contact rate from 66.7 percent at Triple-A last year to 71.6 percent this year.
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Mariners' Josh Simpson: Sent down to minors
Rotowire
The Mariners optioned Simpson to Triple-A Tacoma on Thursday.
Simpson pitched one-third of an inning against Houston on Wednesday and will now make his return to Triple-A in order to make room for Jose Ferrer's return from the paternity list. Simpson made three appearances after being called up May 4, registering a 7.71 ERA with three strikeouts.
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Mariners' Jose Ferrer: Back from paternity leave
Rotowire
The Mariners activated Ferrer from the paternity leave list Thursday.
Ferrer missed the first three games of the series against the Astros as he welcomed a new baby to the family, but he'll be available for Thursday's finale. The hard-throwing southpaw has been terrific in his first season as a setup man in Seattle, boasting a 1.80 ERA and 16:3 K:BB over 20 innings.
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