The Reds recalled Mey from Triple-A Louisville on Wednesday.

He will take the roster spot vacated by left-hander Taylor Rogers, who was traded to the Pirates on Wednesday. Mey's stay in the big leagues could be brief, as the Reds will need to free another spot on the 26-man active roster once the newly-acquired Ke'Bryan Hayes officially reports to the club.

The Giants acquired Butto, right-hander Blade Tidwell and outfielder Drew Gilbert from the Mets on Wednesday in exchange for right-hander Tyler Rogers, Joel Sherman of the New York Post reports.

Butto was a weapon for the Mets in relief in 2024 but has regressed this season, posting a 3.64 ERA, 1.38 WHIP and 41:22 K:BB over 47 innings. While Butto is likely to take Rogers' spot in the Giants bullpen, he has past starting experience and could be a rotation option if San Francisco opts to have him get stretched back out.

The Mets acquired Rogers from the Giants on Wednesday in exchange for right-handers Jose Butto and Blade Tidwell and outfielder Drew Gilbert, Joel Sherman of the New York Post reports.

Rogers has been one of the most effective and durable relievers in baseball over the last several years and has posted a 1.80 ERA, 0.86 WHIP and 38:4 K:BB over 50 innings for the Giants this season. The submarine-style hurler is making $5.25 million in 2025 and is an impending free agent. He'll likely slot in as the top setup man in New York in front of closer Edwin Diaz.

The Pirates acquired Rogers, shortstop Sammy Stafura and cash considerations from the Reds on Wednesday in exchange for third baseman Ke'Bryan Hayes, Jeff Passan of ESPN.com reports.

Rogers has collected a 2.45 ERA and 34:19 K:BB over 33 innings this season for the Reds. Given that he's an impending free agent and the Pirates aren't playoff contenders, the lefty reliever could be flipped to another team before Thursday's trade deadline.

The Nationals recalled Brzykcy from Triple-A Rochester on Wednesday, Andrew Golden of The Washington Post reports.

He'll fill one of openings in the bullpen that was created by the Nationals trading righty Luis Garcia and lefty Andrew Chafin to the Angels earlier Wednesday. Brzykcy has surrendered 17 earned runs over 20.2 frames during his time with the big club this season.

Atlanta designated De Los Santos for assignment Wednesday.

The transaction clears a spot on the 26-man active roster and 40-man roster for right-hander Tyler Kinley, who was acquired in a trade with the Rockies. De Los Santos has posted a 4.53 ERA and 38:18 K:BB over 43.2 innings for Atlanta this season. He could clear waivers, and if he does, he would have the ability to elect free agency.

The Nationals acquired Eder and first baseman Sam Brown from the Angels on Wednesday in exchange for right-hander Luis Garcia and left-hander Andrew Chafin. Eder was then optioned to Triple-A Rochester.

Eder, 26, has produced a 4.91 ERA, 1.31 WHIP and 15:9 K:BB in 18.1 innings over eight appearances out of the Angels bullpen this season. He had made 13 starts with Triple-A Salt Lake, and the Nationals will likely continue to have him stay stretched out as a starter as he reports to their top affiliate in Rochester. Though Washington doesn't have a spot available for Eder in the big-league rotation at the moment, that could change if the Nationals move right-hander Michael Soroka ahead of Thursday's deadline, as has been speculated.

Atlanta acquired Kinley from the Rockies on Wednesday in exchange for right-hander Austin Smith, Mark Feinsand of MLB.com reports.

Atlanta is expected to be a seller ahead of Thursday's trade deadline, but Kinley's contract contains a fairly reasonable $5 million club option for 2026. The 34-year-old holds a 5.66 ERA this season, but he's struck out 51 over 47.2 innings and could find more effectiveness away from Coors Field. Kinley could be in the mix for saves in Atlanta, depending on what other relievers get moved prior to the deadline.

Diaz (1-0) earned the win over Cincinnati on Tuesday, needed just eight pitches to complete 1.1 perfect innings.

Diaz got the call against his former team with two outs in the seventh inning of a 4-4 game. He inherited the speedy Elly De La Cruz at second base, but Diaz needed just two pitches to get Austin Hays to ground out. The righty reliever returned for the eighth and retired the side in order on just six pitches, and then moved into position for the win as a result of Los Angeles scoring in the top of the ninth. Diaz was traded from the Reds to the Dodgers in late May after a rough start to the campaign that resulted in a demotion to the minors. Since joining Los Angeles, he's gotten into three games, tossing 3.1scoreless frames with two punchouts and no walks.

Pressly allowed four runs (three earned) on a hit and two walks across an inning of relief in Tuesday's loss to the Brewers. He struck out two.

Pressly only allowed the one hit but it was a big one, as he served up a grand slam to the red-hot Andrew Vaughn in the sixth inning that broke the game open for Milwaukee. The veteran reliever had seemingly righted the ship after a rough start to the season, but he's now allowed runs in three straight outings, and his ERA has climbed to 4.35. Pressly has a career 3.33 ERA and he was under 4.00 in each of the last seven seasons.