The Cubs re-signed Thielbar to a one-year contract Tuesday, Jesse Rogers of ESPN.com reports.

Thielbar collected a 2.64 ERA and 56:13 K:BB over 58 regular-season innings for the Cubs in 2025. Left-handed batters hit just .161/.211/.276 off the southpaw. Thielbar -- who will turn 39 in January -- will help set up from the left side in the Cubs' bullpen.

Atlanta signed Hernandez to a minor-league contract Nov. 18.

Hernandez split his time in 2025 between the Korea Baseball Organization's LG Twins and Triple-A Buffalo in the Blue Jays organization. The 30-year-old made nine appearances in the majors in 2024 but hasn't seen significant action at the big-league level since 2022. He'll presumably open 2026 in the rotation at Triple-A Gwinnett.

The Athletics released Shuster Dec. 10.

Shuster had been removed from the 40-man roster in November, and now he's out of the organization altogether. A first-round pick in 2020, Shuster has failed to figure things out at the major-league level, posting a 5.27 ERA and 98:64 K:BB over 141.2 innings.

The Blue Jays designated Bruihl for assignment Monday.

The transaction clears a spot on the 40-man roster for Tyler Rogers, whose signing was officially announced Monday. Bruihl made 15 appearances out of Toronto's bullpen in 2025, collecting a 5.27 ERA and 18:7 K:BB across 13.2 frames. The southpaw has been outrighted previously, so he would have to approve an outright assignment by the Blue Jays.

The Diamondbacks signed Campbell to a minor-league contract Dec. 5.

In parts of three seasons in the majors, Campbell has collected a 5.65 ERA and 42:16 K:BB over 43 innings. The 28-year-old reliever will give the Diamondbacks some experienced bullpen depth at Triple-A Reno in 2026.

Brewers GM Matt Arnold said Sunday that the organization is open to utilizing Zerpa as a starting pitcher, Adam McCalvy of MLB.com reports.

The left-hander was acquired from the Royals in exchange for Isaac Collins and Nick Mears, and the Brewers apparently view Zerpa as more than a relief option. The 26-year-old came up through the minors as a starter but operated as a reliever the past two years for the Royals, making all but two of his 129 regular-season appearances out of the bullpen. Even if he sticks as a starter and is fully stretched out to begin the season, Zerpa could have a short leash given his limited workload the last few years.

The Brewers traded Mears to the Royals on Saturday alongside Isaac Collins in exchange for Angel Zerpa, Jeff Passan of ESPN.com reports.

Mears enjoyed the best campaign of his career with Milwaukee in 2025, finishing the regular season with a 3.49 ERA and 0.97 WHIP over 56.2 innings while also notching his first career save. The 29-year-old righty is unlikely to beat out Carlos Estevez and Lucas Erceg in the race for high-leverage opportunities, but Mears will provide some depth into Kansas City's middle-relief unit.

The Royals traded Zerpa to the Brewers on Saturday in exchange for Isaac Collins and Nick Mears, Jeff Passan of ESPN.com reports.

Zerpa finished the 2025 season with a 4.18 ERA and 1.38 WHIP across 64.2 innings while also recording 14 holds. The Brewers aren't hurting for high-leverage arms with Trevor Megill, Abner Uribe and Jared Koenig already making up the back end of their bullpen, so Zerpa will likely start out in a middle-relief role with his new club.

Jansen signed a one-year, $11 million contract with the Tigers on Saturday, Jeff Passan of ESPN.com reports.

Jansen's new deal also includes a club option for the 2027 season, per Cody Stavenhagen of The Athletic. The 38-year-old has yet to show signs of slowing down, as he finished the 2025 campaign with a 2.59 ERA and 0.95 WHIP over 59 innings while collecting 29 saves with the Angels. Now set to spend his 17th MLB season in Detroit, the right-hander will likely begin 2026 as the team's closer, moving Will Vest and Kyle Finnegan into setup roles.

Alexander signed a one-year contract with the Rangers on Friday, Jeff Passan of ESPN.com reports.

Alexander began the 2025 season with Milwaukee but was let go by the club in early June after accumulating a 6.19 ERA and 1.49 WHIP over 36.1 innings. He became more successful after signing with the White Sox, posting a 4.26 ERA and 1.35 WHIP alongside a 52:18 K:BB over 61.1 frames with Chicago. He'll now provide the Rangers with another bullpen arm capable of handling multiple innings at a time and could also be used for an occasional spot start.