Curvelo was optioned to Triple-A Round Rock on Monday.

Curvelo struggled to a 5.68 ERA and 1.42 WHIP over 19.0 innings a season ago in the big leagues, and he wasn't able to show enough during spring training to secure a place in the Rangers' bullpen. He fared better at Triple-A in 2025, posting a 3.76 ERA and 1.32 WHIP with a 41:19 K:BB over 40.2 frames.

The Tigers announced Monday that Seabold will be listed on the Opening Day roster, Evan Petzold of the Detroit Free Press reports.

Seabold agreed to a split major-league contract with the Tigers earlier Monday, and it didn't take long for the club to confirm that the right-hander will start the year in the major leagues. The 30-year-old is presumably in line for low-leverage opportunities with his new squad after working to a 4.35 ERA in 10.1 innings during stops in Tampa Bay and Atlanta a season ago. "We're happy to add him," said manager A.J. Hinch, per Petzold. "We really like the adjustment that he made, with both his stuff and the way his pitches are interacting. As his stuff improved, he got a ton of swing-and-miss this spring."

Moran has secured a place on Boston's Opening Day roster, Ari Alexander of 7 News Boston reports.

Moran fared well in limited spring action, as he tossed 2.2 scoreless frames and struck out three in three appearances. The southpaw is out of minor-league options, which may have factored into Boston's decision to name him to the Opening Day roster. Moran pitched in two games a season ago for the Red Sox, allowing three runs on five hits and three walks while striking out five over four innings of relief work.

The Red Sox reassigned Kahnle to minor-league camp Monday.

Kahnle agreed to a minor-league contract with the Red Sox on Tuesday. It looked like the veteran right-hander had a decent shot at making the team's Opening Day roster as a member of bullpen, but that won't be the case after being reassigned Monday. Kahnle has no minor-league options left, so it's unclear whether he'll stay with Boston or request a release and try his luck elsewhere.

The Red Sox optioned Kelly to minor-league camp Monday.

Kelly was gunning for a spot on Boston's Opening Day roster after appearing in 28 major-league games for the club in 2025, finishing with a 4.58 ERA, 1.33 WHIP, three holds and a 35:12 K:BB across 35.1 innings. The 31-year-old right-hander will likely start out in Triple-A Worcester but would be in line for a call-up to the majors when the Red Sox need more depth out of the bullpen.

Rangers manager Skip Schumaker said Monday that he's comfortable with Martin and Robert Garcia in the closer role, and who he uses in the ninth inning will "depend on the situation," Shawn McFarland of The Dallas Morning News reports.

Schumaker at the start of Rangers camp named Garcia and Martin as the favorites to garner save chances, and he still sees the situation the same way on the precipice of Opening Day. The 39-year-old Martin has never had more than four saves in a single season in his career, but he's been one of the most reliable relievers in baseball over the last four years with a 2.60 ERA, 27.4 percent strikeout rate and 3.1 percent walk rate.

Rangers manager Skip Schumaker said Monday that the team's closer job will "depend on the situation," but he's comfortable with Garcia and Chris Martin in the role, Shawn McFarland of The Dallas Morning News reports.

Schumaker said something similar at the beginning of spring training and what occurred in Cactus League play doesn't appear to have changed his mind. Garcia tied for the team lead with nine saves last season and finished with a 2.95 ERA and 68:22 K:BB across 64 innings. Neither the left-handed Garcia nor the right-handed Martin have notable splits in their careers, so it could be a situation where Schumaker rides the hot hand.

The Tigers placed Brieske (groin) on the 60-day injured list Monday.

Brieske suffered a left adductor strain during a workout last week and will now be shelved until at least late May. Putting Brieske on the 60-day IL frees up a spot on the 40-man roster for the addition of Connor Seabold.

Detroit signed Seabold to a one-year, split major-league contract Monday.

After being cut by Toronto over the weekend, Seabold quickly found an opportunity in a new organization. The 30-year-old righty may end up opening the season at Triple-A Toledo, but he'll claim a spot on the Tigers' 40-man roster and will earn a prorated $800,000 at the big-league level. Detroit cleared room on the 40-man roster for Seabold by placing Beau Brieske (adductor) on the 60-day injured list.

President of baseball operations Chris Young said Monday that Latz will be part of the bullpen on the Rangers' Opening Day roster, Jeff Wilson of AllDLLS.com reports.

Latz will likely be ticketed for a multi-inning relief role, with most of his opportunities expected to come in lower-leverage spots. The assignment to the bullpen is a disappointing outcome for Latz, who looked to have a leg up on Kumar Rocker for the final spot in the season-opening rotation heading into spring training based on his strong close to the 2025 campaign. After an Aug. 20 call-up from Triple-A Round Rock, Latz turned in a 2.10 ERA, 1.07 WHIP and 24:10 K:BB in 30 innings over his final eight outings with the Rangers, but he couldn't carry over that success to the spring. He yielded 16 runs (14 earned) on 18 hits and eight walks over his 15.1 innings during the Cactus League.