The Diamondbacks released Montes De Oca (back) on Tuesday, Aaron Hughes of SI.com reports.

Montes De Oca made his MLB debut last season but underwent back surgery in June that kept him out for the remainder of the year and will also sideline him for most of the 2026 campaign. The 26-year-old righty posted a 4.07 ERA and 1.33 WHIP over 24.1 innings at Triple-A Reno and shouldn't have much trouble landing a minor-league deal despite his injury.

Merryweather was removed from Tuesday's Grapefruit League appearance against the Rays with a left hamstring strain, Bobby Nightengale of the Minneapolis Star-Tribune reports.

Merryweather walked the first batter he saw in the third inning and then struck out the next hitter before being pulled. That the Twins are already calling the injury a strain suggests he could be out a while. Merryweather is in Twins camp as a non-roster invitee.

Santos allowed two hits and two walks across one scoreless inning during Monday's 6-2 Cactus League win over the Athletics.

Santos surrendered a double, a single and two walks but was able to escape the third inning without allowing a run. A non-roster invitee to spring training, Santos signed a minor-league pact with San Francisco in mid-December after being non-tendered by the Mariners following a forgettable two-season stretch in which he made just 16 relief appearances while missing time due to right knee and arm issues. He'll look to earn a spot in the San Francisco bullpen and return to form after his injury problems.

O'Brien (calf) is scheduled to throw a bullpen session Tuesday, Jeff Jones of the Belleville News-Democrat reports.

It will be the first time O'Brien has thrown from the mound since he went down with a minor right calf strain a week ago. The injury is expected to prevent the reliever from pitching for Team South Korea in the World Baseball Classic, but O'Brien should not have trouble ramping up in time for Opening Day if he can avoid setbacks.

Bickford was shut down from throwing Tuesday due to a triceps strain, Chris McCosky of The Detroit News reports.

Bickford joined Detroit on a minor-league contract in January but is now dealing with an arm injury early in camp. The right-hander was already a longshot to crack the Opening Day roster, and the injury likely guarantees he'll open 2026 at the Triple-A level.

Holmes gave up two runs on one hit and two walks over 3.2 innings in the Mets' Grapefruit League game against the Blue Jays on Monday. He struck out three.

The right-hander threw 57 pitches (30 strikes) as he prepares to represent Team USA in the World Baseball Classic. Holmes' one real mistake came on an 82.2 mph curveball to Kazuma Okamoto, which the Japanese slugger put over the fence in center field for a two-run home run. It's a pitch Holmes didn't throw at all in 2025. Once he returns to camp from the WBC, Holmes will be battling with Kodai Senga for the fifth spot in the Mets' Opening Day rotation, although with only two days off through the first three weeks of their schedule, it's possible the team will roll with a six-man rotation out of the gate.

Stephenson (shoulder) said Tuesday he believes he'll be ready for Opening Day, Rhett Bollinger of MLB.com reports.

He threw another bullpen session Monday after showing up to camp behind schedule due to a nerve issue and thoracic outlet syndrome symptoms he experienced this offseason. It remains to be seen if Stephenson's stuff has suffered as a result of these physical issues, as he has not made his Cactus League debut yet.

Joyce (shoulder) will throw another bullpen session Wednesday, likely only throwing fastballs and changeups, Rhett Bollinger of MLB.com reports.

Joyce said Tuesday that his throwing progression is going well, but he's not yet ready to incorporate sliders into his routine. It's not clear whether he'll be ready in time for Opening Day, but he continues to make steady progress.

Ferrer was charged with the loss in Monday's Cactus League matchup with the Dodgers. He allowed two runs on three hits and a walk while striking out one in one-third of an inning.

It certainly wasn't the ideal start to the spring for Ferrer. The lefty struck out Andy Pages to open the frame before surrendering three straight hits, including a pair of doubles, followed by a walk and a wild pitch. The Mariners are hoping that Ferrer can shake off the rust before Opening Day, as he's expected to play a key role in the back end of their bullpen. Ferrer was traded to Seattle in December after posting a 4.48 ERA with a 1.27 WHIP and 71:16 K:BB across 76.1 innings with the Nationals in 2025.

Bender (shin) threw a live batting practice session Tuesday, Christina De Nicola of MLB.com reports.

Bender has been slowed early in Marlins camp by a shin issue, but he did not appear compromised Tuesday, sitting 95-96 mph with his fastball. The veteran reliever's next time on the bump could be in a game setting.