Atlanta outrighted Molina to Triple-A Gwinnett on Friday.

Molina was claimed off waivers from the Rockies earlier this month. The 23-year-old right-hander sports an ugly 6.96 ERA, 1.61 WHIP and 65:28 K:BB across 94.1 innings spanning 52 appearances (two starts) over the previous two seasons with Colorado.

The Orioles designated Walker for assignment Friday, Roch Kubatko of MASNSports.com reports.

Walker was claimed off waivers from Atlanta earlier this month after he was previously DFA'd by Baltimore in November. He's now going to be exposed to waivers once again. The 31-year-old left-hander appeared in three games for Toronto last season, turning in a 7.20 ERA, 2.00 WHIP and 8:2 K:BB across five innings of work at the big-league level.

The Pirates acquired Montgomery from the Rays on Friday in a three-team trade, Chandler Rome and Ken Rosenthal of The Athletic report.

Montgomery logged a 5.67 ERA and walked 27 over 46 innings with the Rays in 2025, but he also struck out 63 batters and, at 98.7 mph, has one of the hardest average four-seamer velocities in the game. The lefty has past starting experience, but the Pirates are likely to keep Montgomery in the bullpen, and he could work his way into high-leverage appearances.

The Rays acquired Brito and Jacob Melton from the Astros on Friday in a three-team trade that sent Mike Burrows to the Astros and Brandon Lowe, Jake Mangum and Mason Montgomery to the Pirates, Chandler Rome and Ken Rosenthal of The Athletic report.

The 21-year-old right-hander spent the entire 2025 campaign at High-A Asheville and started all 12 games in which he appeared, registering a 3.28 ERA and 11.9 K/9 across 49.1 innings. Brito missed some time with an unspecified injury but was back to full strength in October.

The Pirates acquired Mangum from the Rays on Friday in a three-team trade, Chandler Rome and Ken Rosenthal of The Athletic report.

Mangum had a successful rookie season in 2025 with the Rays, slashing .296/.330/.368 with three home runs and 27 stolen bases. He'll turn 30 in March but is under team control through 2030. Mangum could be the favorite to open the 2026 season as the Pirates' starting left fielder, and he's capable of handling all three outfield spots.

The Rays acquired Melton and Anderson Brito from the Astros on Friday in a three-team trade that sent Mike Burrows to the Astros and Brandon Lowe, Jake Mangum and Mason Montgomery to the Pirates, Chandler Rome and Ken Rosenthal of The Athletic report.

Melton was one of Houston's top prospects, and the 25-year-old got his first taste of MLB action last season, appearing in 32 games for the Astros. The outfielder slashed .157/.234/.186 with one triple, seven RBI, seven runs scored, seven stolen bases and a 6:29 BB:K across 78 big-league plate appearances. He figures to initially slot into Tampa Bay's outfield mix behind Chandler Simpson, Cedric Mullins, Josh Lowe and potentially even Jake Fraley.

The Astros are acquiring Burrows from the Pirates on Friday in a three-team trade that also includes the Rays, Chandler Rome, Stephen J. Nesbitt and Ken Rosenthal of The Athletic reports.

Burrows opened 2025 in the minors but made his season debut for the Pirates in May, and he delivered a strong rookie campaign with a 3.94 ERA, 1.24 WHIP and 97:31 K:BB across 96 innings. The right-hander is the only piece heading to the Astros in the deal, with Brandon Lowe, Mason Montgomery and Jake Mangum moving to Pittsburgh while the Rays get Anderson Brito and Jacob Melton. Burrows should slot into the middle of Houston's rotation during his sophomore campaign.

The Pirates acquired Lowe, Jake Mangum and Mason Montgomery from the Rays on Friday in a three-team trade that sent Mike Burrows to the Astros and Jacob Melton and Anderson Brito to Tampa Bay, Chandler Rome and Ken Rosenthal of The Athletic report.

The Rays picked up Lowe's $11.5 million option for 2026 last month but will now ship him to another team. Lowe slashed .256/.307/.477 with 31 home runs over 134 games with the Rays during the 2025 season. The 31-year-old will give the Pirates some much-needed thump to their lineup and also take over at a position of need in second base.

The Cardinals outrighted Koperniak to Triple-A Memphis on Friday.

While no longer on the 40-man roster, Koperniak will remain in the organization after passing through waivers unclaimed. The 27-year-old outfielder is coming off a poor 2025 season at Memphis, slashing .249/.322/.387 across 537 plate appearances.

The Padres signed Miranda to a minor-league contract Friday that includes an invitation to spring training, Aram Leighton of JustBaseball.com reports.

Miranda showed promise at times while with the Twins, but he crashed out in 2025, going 6-for-36 with the big club and slashing only .195/.272/.296 across 371 plate appearances at Triple-A St. Paul. Still, the 27-year-old is a solid get on a minor-league contract, and there's a non-zero chance he pushes for playing time at first base in San Diego.