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Mariners' Bryce Miller: Headed for another tandem start
Rotowire
Miller is scheduled to start Sunday's game against the Diamondbacks in Seattle and will be used in tandem with Luis Castillo, Adam Jude of The Seattle Times reports.
Though both Miller and Castillo have expressed displeasure with being deployed in a piggyback arrangement, the two pitchers will nonetheless operate in a tandem for a third consecutive turn through the rotation. The setup worked well the last time out Monday in Sacramento, with Castillo delivering four shutout frames to open the game before Miller followed with four strikeouts over five innings of two-run ball en route to picking up his first win of the season. The two will pitch in the opposite order Sunday, and while being piggybacked by Castillo will likely suppress MIller's workload, the latter should still be able to reach the five innings he would need to hit to qualify for a win in a starting role. Since being activated from the injured list May 13, Miller has covered between five and 5.2 innings and 72 and 83 pitches over his three appearances while posting a 2.55 ERA and 1.00 WHIP.
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Mariners' Bryce Miller: Records first win of season
Rotowire
Miller (1-0) earned the win over the Athletics on Monday, allowing two runs on five hits and no walks while striking out four batters over five bulk-relief innings.
Seattle went with the unorthodox pairing of Luis Castillo and Miller for Monday's contest. Castillo was excellent in tossing four scoreless innings, but Miller ended up throwing more pitches (83 to 68) and benefitted by being the pitcher of record despite entering with a hearty 7-0 lead. Miller is still somewhat working his way back after missing the early part of the season due to an oblique injury, but he's completed at least five innings and thrown at least 72 pitches in each of his three outings. It remains to be seen if the pairing of Miller and Castillo will continue moving forward, but Miller has thrived regardless of his role this season, posting a 2.25 ERA, 1.00 WHIP and 14:2 K:BB through 16 innings.
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Mariners' Bryce Miller: Following Castillo on Monday
Rotowire
Mariners manager Dan Wilson said that Miller will pitch out of the bullpen behind starter Luis Castillo in Monday's game against the Athletics in Sacramento, Ryan Divish of The Seattle Times reports.
Since being activated May 13 following a season-opening stint on the injured list, Miller has looked sharp over his first two starts, covering 5.1 and 5.2 innings in those outings while posting a collective 1.64 ERA, 1.00 WHIP and 10:2 K:BB. The Mariners used Castillo for 2.1 innings out of the bullpen in Miller's latter start, and while the two will work in tandem once again Monday, the order that they pitch will be reversed. Seattle will likely let Castillo work a little bit longer in a starting role than he did as a reliever his last time out, but Miller could still end up covering the bulk of the innings, given that he's been the better performer of the two thus far. Pitching out of the bullpen may also increase Miller's odds of earning his first win of the season, after the Mariners held him to fewer than 85 pitches as a starter in both of his previous two starts.
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Mariners' Bryce Miller: Dazzles in no-decision
Rotowire
Miller allowed one hit and one walk while striking out seven over 5.2 scoreless innings in a no-decision versus the White Sox on Tuesday.
Miller threw 50 of 72 pitches for strikes, a drop from the 81 pitches he threw in his season debut. Miller was in line for the win, but Luis Castillo and Andres Munoz combined to give up the one-run lead in the ninth inning. With two runs allowed on nine hits and two walks over 11 innings across two starts, Miller has looked superb since returning from an oblique strain. He's done well enough to earn another start as the Mariners continue to try to set their rotation in some way. Miller is tentatively lined up to pitch on the road against the Athletics in some capacity early next week.
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Mariners' Bryce Miller: Will be piggybacked Tuesday
Rotowire
Miller will start Tuesday's game against the White Sox and will be piggybacked by Luis Castillo out of the bullpen, Adam Jude of The Seattle Times reports.
Miller and Castillo both made their own starts last week following the former's return from the injured list, but the two will work in tandem Tuesday while the Mariners condense their rotation from six to five. Mariners manager Dan Wilson hasn't provided an indication of how the innings will break down between the two pitchers, but after covering 5.1 frames in Houston last Wednesday in his 2026 big-league debut, Miller could work deep enough into his start against Chicago to qualify for a win. The Mariners will likely see how both Miller and Castillo fare Tuesday before determining whether to keep the piggyback arrangement in place the next time the fifth spot in the rotation comes up.
Mariners' Bryce Miller: No-decision in season debut
Rotowire
Miller (oblique) allowed two runs on eight hits and a walk while striking out three over 5.1 innings in a no-decision versus the Astros on Wednesday.
Miller missed over a quarter of the season while recovering from a left oblique strain. He threw 58 of 81 pitches for strikes in his season debut, so he may have had a slight workload limitation in place. That will likely continue in his next start, tentatively expected to be against the White Sox, as Miller and Luis Castillo are expected to work as a tandem in that game to buy the Mariners some time to sort out what to do with their rotation, which has six healthy starters. As long as Miller pitches well, he's likely to be a starter moving forward, though he'll also need to stay healthy as he tries to bounce back from an ugly 5.68 ERA and 1.41 WHIP across 90.1 innings in the 2025 regular season, which was disrupted by elbow troubles.
Mariners' Bryce Miller: Activated for season debut
Rotowire
The Mariners reinstated Miller (oblique) from the 15-day injured list ahead of his scheduled start Wednesday in Houston.
The 27-year-old will be making his 2026 debut for the Mariners after spending the first seven weeks of the season on the shelf while recovering from a left oblique strain that he sustained early in spring training. Miller is coming off a rough 2025 campaign in which he compiled a 5.28 ERA and a middling 10.2 K-BB% over 18 starts during the regular season, though he fared better over his three playoff starts. The right-hander was generally sharp over his four-start rehab assignment (1.98 ERA, 1.17 WHIP, 14:7 K:BB in 13.2 innings), but he'll likely need to perform well upon his return from the shelf to ensure he maintains a spot in the Seattle rotation for the long haul. While Miller will receive a standalone start Wednesday, Ryan Divish of The Seattle Times relays that the Mariners plan to have him piggyback with the struggling Luis Castillo for a game during next week's series versus the White Sox. How Miller and Castillo perform in their next two appearances could determine which of the two remains in a starting role when the Mariners condense from a six-man to five-man rotation.
Miller (oblique) will return from the injured list to start Wednesday's game against the Astros, Shannon Drayer of SeattleSports.com reports
Miller has been on the injured list since the beginning of the season with a left oblique strain. He's made four rehab starts in the minors since then, allowing three earned runs and posting a 14:7 K:BB over 13.2 innings. He built up to just 61 pitches over five innings during his most recent outing at High-A Everett, so the Mariners may have him on a pitch count during his season debut in Houston. Seattle will go with a six-man rotation temporarily upon Miller's return, but Ryan Divish of The Seattle Times reports that he'll get piggybacked with Luis Castillo the following week during a series against the White Sox.
Mariners' Bryce Miller: Likely to return next week
Rotowire
The Mariners are leaning toward activating Miller (oblique) from the 15-day injured list next week in Houston, Adam Jude of The Seattle Times reports.
Miller threw 61 pitches over five shutout innings in his last rehab start with High-A Everett on Wednesday and declared himself "ready to go" after the outing. The Mariners haven't ruled out giving Miller one more rehab start to get further stretched out, but Jude hears it's likelier Miller's next outing is in the majors. Rejoining the rotation is just one of the scenarios the Mariners are considering for Miller, as the club is also mulling using him in the bullpen or in a piggyback role. Shifting Luis Castillo or Emerson Hancock to the bullpen is also possible, as is a six-man rotation. Seattle will make a decision on its rotation in the coming days.
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