Miller did not throw a bullpen session as scheduled Wednesday because his left oblique didn't feel right, Shannon Drayer of SeattleSports.com reports.

Miller had been slated to throw his first full-effort bullpen sessions since he felt inflammation in his left oblique in late February. Mariners general manager Justin Hollander said Wednesday that the right-hander does not need to be completely shut down from throwing. However, Miller will have to revert back to flat-ground work, and he is increasingly unlikely to be available for the start of the regular season.

The Mariners optioned Castano to Triple-A Tacoma on Wednesday.

Castano has yielded five runs with a 3:3 K:BB over five innings in five Cactus League outings. The 27-year-old will likely begin the season in the rotation at Triple-A Tacoma, but if he gets another shot with the big club, it could be as a reliever.

The Athletics optioned Estes to Triple-A Las Vegas on Wednesday.

After overcoming a herniated disc in his lower back, Estes threw 2.2 scoreless innings in Tuesday's Cactus League game against the White Sox in his spring training debut. He now finds himself cut from big-league camp a day later. Estes is ticketed for the Triple-A Las Vegas rotation at the start of the season.

Miller (oblique) will throw a normal bullpen session Wednesday, Daniel Kramer of MLB.com reports.

Miller has previously thrown off the mound at less than full effort, but he'll throw his first standard bullpen session since he came down with inflammation in his left oblique in late February. The Mariners haven't revealed a target date for Miller's return to game action, but it will be close as to whether he can ramp back up in time for Opening Day.

Astros manager Joe Espada said Wednesday that Javier will be away from the club for the next few days while tending to a personal matter, Chandler Rome of The Athletic reports.

Citing privacy, Espada didn't provide any further information regarding Javier's upcoming absence, but the skipper noted that the right-hander will continue to throw while he remains away. Javier tossed 1.2 innings and 52 pitches in his Grapefruit League debut Monday, so as long as he's able to return to the team in time to make another start before spring training ends, he should be able to handle something close to a normal workload when his first turn in the rotation comes up during the regular season.

Matz allowed one hit and one walk in four shutout innings during Tuesday's Grapefruit League game against the Twins. He struck out three.

Matz is now up to six scoreless frames covering two Grapefruit League outings. The 34-year-old left-hander is looking to open his first season with Tampa Bay as part of the starting rotation, which could occasionally give him streaming appeal in deep fantasy leagues for home starts at pitcher-friendly Tropicana Field based on matchups. Last regular season, Matz posted a quality 3.05 ERA, 1.10 WHIP and 59:11 K:BB over 76.2 innings between St. Louis and Boston.

Ryan (back) threw three scoreless innings in his spring debut Tuesday with two walks and no strikeouts. "We'll talk and check in this week and see where we're at, but I think things are looking pretty good," Ryan said of his chances to pitch in the WBC according to Declan Goff of SKOR North.

Ryan said his back felt good during the outing where he threw 48 pitches. It remains to be seen if he'll join Team USA for the second round of the WBC, but it sounds like he has a good chance to be ready for Opening Day. Ryan was scratched ahead of his first scheduled spring start Feb. 21 when he experienced tightness on the right side of his back. An MRI revealed only inflammation and he was able to begin throwing soon afterward.

Estes (back) is scheduled to make his spring debut during Tuesday's Cactus League game against the White Sox, Jason Burke of SI.com reports.

The right-hander finished last season on the injured list due to a herniated disc in his lower back, and he ramped up slowly early on in spring training. Estes made just three appearances for the A's last season and spent most of the campaign at Triple-A Las Vegas, where he struggled to a 5.51 ERA across 80 innings.

Yesavage is scheduled for a two-inning simulated game against minor leaguers Wednesday, Arden Zwelling of Sportsnet.ca reports.

The Blue Jays are slow-playing Yesavage this spring after he had a significant workload jump in 2025. While the young right-hander is still expected to break camp as a member of Toronto's rotation, his workload limitations will carry over into the beginning of the regular season.

Tiedemann (elbow) resumed a throwing program Tuesday, Arden Zwelling of Sportsnet.ca reports.

Tiedemann was shut down in late February after feeling soreness following a bullpen session but has improved enough for clearance to throw on flat ground. He will continue to build up his throwing progression as his health allows. Tiedemann missed all of 2025 while rehabbing from Tommy John surgery.