Elko (knee) agreed to a minor-league contract with the White Sox on Sunday, Jack Ankony of SI.com reports.

The 26-year-old hit the opening market in November after Chicago elected not to tender him a contract for 2026, but he's now back with the organization on a minor-league deal. Elko underwent surgery to repair a torn ACL in his right knee after the season, so he'll be unavailable for at least the first few months of the 2026 campaign.

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

Collins entered the 2025 season as a relatively unknown player but quickly proved himself as a productive bat, slashing .263/.368/.411 with 54 RBI, 56 runs scored and 16 stolen bases over 441 regular-season plate appearances. However, he struggled down the stretch and didn't have a significant role for the Brewers in the playoffs. His overall performance allowed him to take fourth place in NL Rookie of the Year voting. With Garrett Mitchell (shoulder) expected to return in 2026 and Akil Baddoo signing with the Brewers on Thursday, Milwaukee's outfield room was beginning to become crowded, so the team will now send Collins to Kansas City, where the 28-year-old outfielder should have a much easier path to regular playing time.

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.

May signed a one-year contract with the Cardinals on Saturday that includes a mutual option for 2027, Jeff Passan of ESPN.com reports.

May set a new career high with 132.1 innings pitched between the Dodgers and Red Sox in 2025, though his 4.96 ERA and 1.42 WHIP in the regular season both marked significant regression from previous years. Despite his recent struggles, the 28-year-old righty should have little trouble claiming a spot in a Cardinals rotation that doesn't feature much depth following the departure of Sonny Gray.

Frasso (undisclosed) signed a minor-league contract with the Dodgers on Saturday, Aram Leighton of JustBaseball.com reports.

After turning in a 5.49 ERA and 1.58 WHIP over 77 innings at Triple-A Oklahoma City this past season and being non-tendered by the Dodgers in November, Frasso will officially return to the organization for 2026. The 27-year-old is still waiting on his first promotion to the majors, but he will likely need to show significant improvement in the minors before getting called up for his MLB debut.

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.

Rosario signed a one-year, $2.5 million contract with the Yankees on Saturday, Jon Heyman of the New York Post reports.

Rosario appeared in just 16 regular-season games after being traded from the Nationals to the Yankees, going 10-for-33 with a homer and five RBI. The 30-year-old will now return to the Bronx and provide the Pinstripes with a bench piece who is capable of playing nearly every defensive position. Rosario slashed .302/.328/.491 against southpaws in 2025.