Blackburn (back) will play catch Wednesday and hopes to return from the 15-day injured list as soon as the middle of next week, Anthony DiComo of MLB.com reports.

Blackburn is dealing with a spinal fluid leak but is feeling better after being given about 10 platelet-rich plasma injections. The right-hander hasn't pitched in two weeks, and the layoff, combined with how well the members of New York's rotation are currently pitching, means that Blackburn would likely return as a reliever once he's activated.

Kershaw (toe) threw an extended bullpen session Wednesday in Miami, David Vassegh of AM 570 LA Sports reports.

Dodgers manager Dave Roberts said the left-hander threw between 80 and 83 pitches in what was Kershaw's first time on a mound since he landed on the 15-day injured list at the end of August with a bone spur in his left big toe. Roberts previously had said it was unlikely Kershaw would make it back before the end of the season, but the fact that Kershaw was able to throw so many pitches in the bullpen session Wednesday suggests the door is ajar for a return next week. Kershaw will likely need to face hitters in live batting practice or a simulated game before getting the green light to return from the IL.

The Cardinals recalled McGreevy from Triple-A Memphis on Wednesday.

St. Louis' initial plan appears to be using McGreevy in relief, though he could be a candidate to make a start or two before the season comes to a close. He went seven frames of one-run ball in a spot start earlier this season in his major-league debut and collected a 4.02 ERA and 138:44 K:BB across 150 innings covering 27 outings at Memphis.

The Cardinals placed Lynn on the 15-day injured list Wednesday with right knee inflammation.

Lynn picked up a win Tuesday, holding the Pirates to one run over six innings. However, his knee has been an issue off and on throughout the 2024 campaign, and the Cardinals have decided it was for the best to shut him down. St. Louis has been using a six-man rotation lately, so they could either go back to a traditional five-man setup for slide Steven Matz or Michael McGreevy into Lynn's spot.

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.

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.