Bido was designated for assignment by Atlanta on Monday.

Bido will lose out on his 40-man roster spot after the club agreed to a one-year deal with Ha-Seong Kim. Bido was claimed off waivers by Atlanta just over a week ago and will now head back to the waiver wire following Monday's transaction.

Kim signed a one-year, $20 million contract with Atlanta on Monday, Jon Heyman of the New York Post reports.

Kim finished out the 2025 campaign with Atlanta after being claimed off waivers, and he did enough to earn himself another look with the club in 2026. He slashed .253/.316/.368 with three home runs, 12 RBI and 14 runs scored in 24 games down the stretch of the 2025 season after being dumped by the Rays. Kim figures to see the bulk of his playing time at shortstop heading into the upcoming season, though he can also manage at the keystone if necessary. Mauricio Dubon is expected to be deployed as a true utility man following the addition of Kim.

The Nationals acquired Perales from the Red Sox on Monday in exchange for Jake Bennett, Jeff Passan of ESPN.com reports.

It's a prospect-for-prospect trade. Perales missed a large chunk of 2024 and nearly all of 2025 while recovering from Tommy John surgery, but he's wowed with his stuff since returning, regularly reaching triple digits with his fastball. The 22-year-old has thrown a total of 9.2 innings beyond A-ball and has a career 12.3 percent walk rate in the minors, but Perales' upside is huge.

Darvish (elbow) said Monday that he's unsure whether he will continue his baseball career after completing rehab for his November UCL repair with an internal brace and flexor tendon surgery, Dennis Lin of The Athletic reports.

Darvish will miss the entire 2026 season and will be 40 years old heading into the 2027 campaign. He's owed $30 million between 2027 and 2028, so while he has financial incentive to continue pitching, the right-hander is currently focused on his rehab and will make a decision about his playing career at a later date. Darvish posted a 5.38 ERA and 68:19 K:BB over 72 regular-season innings covering 15 starts for the Padres in 2025.

The Mets are considering using Sproat as a multi-inning reliever in 2026, Will Sammon of The Athletic reports.

The Mets still view Sproat as a starting pitcher over the long haul, but there's currently not room for him in the major-league rotation and the club believes he can help in the bullpen. Sproat made four starts for the Mets in September, finishing with a 4.79 ERA and 17:7 K:BB over 20.2 innings. The 25-year-old posted a 4.24 ERA and 113:53 K:BB across 121 frames in 2025 with Triple-A Syracuse.

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.

The Phillies signed Garcia to a one-year, $10 million contract Monday, Francys Romero of BeisbolFR.com reports.

The Phillies are expected to trade or release Nick Castellanos this offseason, and Garcia is now lined up to replace him in right field. Garcia has just a .675 OPS and 89 wRC+ over the last two seasons, though he graded out as a solid defender in right field in 2025. He should benefit from a ballpark and lineup upgrade in 2026 in what will be his age-33 season.

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.

Kelly agreed to a two-year, $40 million contract with the Diamondbacks on Sunday, Ken Rosenthal of The Athletic reports.

The 37-year-old right-hander was dealt by the Diamondbacks to the Rangers at the trade deadline in July, and he'll now return to the desert for an eighth season. Kelly should step back in as Arizona's ace after posting a 3.52 ERA, 1.11 WHIP and 167:48 K:BB across 184 innings last season.

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.