The Nationals optioned Ribalta to Triple-A Rochester on Wednesday.

Since being promoted into Washington's bullpen Aug. 1, Ribalta has turned in a 5.27 ERA and 1.90 WHIP alongside a 15:11 K:BB across 13.2 innings. The 27-year-old's subpar performance will now cause him to return to the minors in anticipation of MacKenzie Gore's (shoulder) return from the injured list Thursday.

Seymour (1-3) took the loss Wednesday against the Diamondbacks, allowing four runs on six hits across 1.1 innings. He struck out one.

It was a rough day for Seymour, who gave up a home run to Geraldo Perdomo to lead off the game before giving up three more runs before departing with one out in the second. The 26-year-old Seymour has given up nine runs across 9.1 innings in three starts with the Giants. He's currently scheduled to face the Diamondbacks again in his next outing, though he could return to the bullpen when Carson Whisenhunt (back) is able to rejoin the rotation.

Jansen struck out two in a perfect ninth inning Wednesday to record his 27th save of the season in a 4-3 win over the Twins.

The veteran closer has converted 12 straight save chances since the beginning of July, posting a 1.37 ERA, 0.65 WHIP and 26:7 K:BB in 26.1 innings over that stretch while also adding four wins. Jansen is up to 474 saves for his career, leaving him four behind Hall of Famer Lee Smith for third place on the all-time list.

Chapman (4-3) took the loss Wednesday against the A's, allowing a run on two hits in one-third of an inning.

Shea Langeliers led off the bottom of the ninth inning with a double, the first hit given up by Chapman since July 23, a span of 14.2 innings. Langeliers would advance to third on a sacrifice fly before Chapman gave up a game-winning single to Lawrence Butler. Despite the hiccup Wednesday, it's been an incredible season for the 37-year-old Chapman, who sports a sparkling 1.14 ERA, 0.67 WHIP and 81 strikeouts over 55.1 innings.

Maton earned the save in Wednesday's 6-3 win over the Brewers, striking out one without allowing a run over two-thirds of an inning.

After Shawn Armstrong walked Issac Collins with one out in the ninth, Maton was brought in to face the top of Milwaukee's batting order. The right-hander would strike out Brice Turnag before Jackson Chourio lined out, sealing the three-run Texas victory. It's the fourth save of the year for Maton and his first since August 5 -- he had blown his last three save chances while posting a 5.73 ERA in 11 innings prior to Wednesday, thus ceding the closing job to Armstrong. Overall, Maton's ERA sits at 2.95 this season with a 1.09 WHIP and 73 strikeouts across 55 innings between the Rangers and Cardinals.

Detmers was removed from Wednesday's game against the Twins with a forearm injury, Erica Weston of Bally Sports West reports.

Detmers reportedly didn't like how the ball was coming out of his hand while on the mound Wednesday and felt something in his forearm, leading the Angels' training staff to pull the lefty after he gave up a double to James Outman in the eighth inning. The Halos should provide some clarity on the severity of Detmers' injury in the near future, but he can be considered day-to-day for the time being.

The Astros recalled Hernandez from Triple-A Sugar Land on Wednesday.

After a month-long stay at Triple-A, Hernandez will rejoin the Houston bullpen as a replacement on the active roster for right-hander Luis Garcia (elbow), who was placed on the 15-day injured list. Over five relief appearances with the Astros this season, Hernandez has submitted a 5.40 ERA, 1.95 WHIP and 7:5 K:BB in 6.2 innings.

The Cubs optioned Roberts to Triple-A Iowa on Wednesday, Maddie Lee of the Chicago Sun-Times reports.

Roberts' stay with the big club lasted just two days, and the right-hander didn't appear in relief in either of the Cubs' first two games of their series in Atlanta. He'll be pushed off the 28-man active roster with the Cubs bringing back Jameson Taillon (groin) from the 15-day injured list to start Wednesday's series finale.

The White Sox designated Altavilla for assignment Wednesday.

Altavilla has managed a 2.48 ERA over 29 relief innings for the White Sox this season, but that's come with an uninspiring 21:15 K:BB. If the 33-year-old clears waivers, he would have the ability to elect free agency.

Miller is hopeful of avoiding a full UCL repair of his right elbow following a visit with Dr. Keith Meister in Texas, Adam McCalvy of MLB.com reports.

Miller needs surgery, but a procedure that's less invasive than Tommy John surgery would give him a chance to return late in the 2026 season. The reliever collected a 2.74 ERA and 54:15 K:BB over 46 innings between the Diamondbacks and Brewers this season and will be a free agent this winter.