Williamson said Wednesday that he has a full UCL tear in his left elbow and will require Tommy John surgery, Mark Sheldon of MLB.com reports.

Williamson's comments came shortly after the Reds placed him on the 15-day injured list earlier Wednesday. The southpaw had been on the shelf for most of the season due to a shoulder problem, but he avoided surgery and was cleared to make his 2024 debut for the Reds on Sept. 1 after making just one rehab start. He produced a 3.77 ERA, 1.05 WHIP and 12:5 K:BB across 14.1 innings in four starts with the Reds before he ultimately strained his elbow in Tuesday's 6-5 win over Atlanta. A date for Williamson's elbow surgery hasn't been set, but he'll miss the entire 2025 season while he embarks on an arduous rehab process.

The Marlins reinstated Weathers (finger) from the 60-day injured list ahead of his scheduled start Wednesday against the Dodgers in Miami.

Miami designated long reliever Jeff Lindgren for assignment to clear room for Weathers on the 40-man roster and 28-man active roster. The southpaw had delivered five consecutive quality starts plus an 11-strikeout outing before he was lifted from his last appearance June 7 due to a left index finger strain. Though Weathers' return from the IL took longer than expected, he'll likely be in store for two more starts with the Marlins to close out the season. Weathers should be stretched out enough to handle somewhere close to a typical starter's workload after he tossed 78 pitches over five scoreless innings last Friday in his final rehab start with Triple-A Jacksonville.

The Reds placed Williamson on the 15-day injured list Wednesday with a left elbow strain.

Williamson exited his start Tuesday against Atlanta because of the injury, and it has now officially ended his season. The left-hander also missed much of the campaign with a Bennett lesion in his left shoulder, ultimately opting to treat that injury with injections rather than surgery. It's not clear at this point whether an offseason operation for either injury might be on the table.

Macko (forearm) was reinstated from Double-A New Hampshire's 7-day injured list Sept. 11 and promoted to Triple-A Buffalo on Tuesday.

Macko had been on the shelf at Double-A since July 6 with a left forearm injury before beginning a rehab assignment with Single-A Dunedin on Aug. 24. After three rehab starts with Dunedin, Macko returned to action for New Hampshire on Sept. 11, tossing four innings while allowing six runs in a loss to Somerset. Despite the poor showing, Macko moved up to Buffalo and made his Triple-A debut Tuesday, when he struck out three while allowing three runs on four hits and three walks over three innings.

The Cubs activated Steele (elbow) from the 15-day injured list Wednesday, Maddie Lee of the Chicago Sun-Times reports.

Steele will rejoin the rotation Wednesday against the Athletics after missing the last three weeks of action with left elbow tendinitis. The southpaw didn't make a rehab start, so he could be working with a limited pitch count Wednesday.

The Cardinals are expected to recall McGreevy from Triple-A Memphis prior to Wednesday's game against the Pirates, Katie Woo of The Athletic reports.

McGreevy was scratched from a scheduled start Tuesday for Memphis, and that move was evidently made because he's headed back to the majors. While a start down the stretch is possible, McGreevy is expected to be available in long relief for now. He threw seven innings of one-run ball in a spot start in his major-league debut in late July.

Scott's (elbow) agent, Nate Heisler, announced Wednesday via social media that the right-hander will undergo a traditional Tommy John surgery combined with an internal brace early next week.

Scott was placed on the 15-day injured list shortly after the All-Star break with a UCL sprain in his right elbow, but the Mets had initially been optimistic that the 25-year-old would be able to avoid surgery and make a late-season return. He was cleared to start throwing off flat ground in late August and advanced to throwing bullpen sessions earlier this month, but Scott appears to have hit a snag in his recovery that has prompted him to get surgery. Since Scott is set to undergo a hybrid procedure involving the internal brace, he may have a slightly speedier recovery than if he had opted for Tommy John surgery alone, but he's still likely to miss the entire 2025 season.

Rea is not listed among the Brewers' probable starters for their upcoming series versus the Diamondbacks and could be shifted to a relief role ahead of the postseason, Adam McCalvy of MLB.com reports.

Rea's last start came Sept. 11, when he was blasted for 10 runs over four innings in a loss to the Giants. He then threw 2.2 scoreless innings out of the bullpen to pick up a save in Monday's win over the Phillies. The Brewers don't currently have a starter listed for Friday, and it's possible Rea will wind up taking the ball that day on three days' rest. Even if he gets another start or two down the stretch, Rea looks on track to fill a relief role during the postseason. He's posted a 6.82 ERA over his last seven appearances (six starts).

Wicks (2-4) took the loss Tuesday, giving up four runs on seven hits -- including three home runs -- and two walks over five innings as the Cubs fell 4-3 to the A's. He struck out four.

The southpaw got taken deep by Shea Langeliers in the first and fifth innings, with a Lawrence Butler third-inning solo shot sandwiched in between. Wicks has served up a brutal seven homers over his last two starts, but with the Cubs' playoff hopes on life support, the team has little reason to remove the 25-year-old from the rotation despite his 5.48 ERA, 1.63 WHIP and 42:20 K:BB through 46 innings on the season.

Spence (8-9) picked up the win in Tuesday's 4-3 victory over the Cubs, giving up two runs on seven hits and a walk over five innings. He struck out six.

It's the right-hander's first win since July 27. Spence didn't pitch poorly during that eight-start winless streak, however, posting a 4.01 ERA, 1.45 WHIP and 35:13 K:BB over 42.2 innings. He lines up to make his final start of 2024 at home next week against the Rangers.