Perez (elbow) threw light toss on flat ground Tuesday, Christina De Nicola of MLB.com reports.

Tuesday marks the first time Perez has done any sort of throwing since he underwent Tommy John surgery in April. He obviously has a lot more work to do before he's ready to return to a major-league mound, but it's certainly encouraging to see him making progress in the right direction. The 21-year-old righty is expected to rejoin the Marlins' rotation midway through the 2025 campaign.

Williamson was removed from his start Tuesday against Atlanta with an apparent injury, Gordon Wittenmyer of The Cincinnati Enquirer reports.

Williamson appeared to be grabbing at his left elbow after making a pitch in the second inning of Tuesday's contest. The specifics of his injury won't be known until the Reds are able to take a closer look at him, but the 26-year-old southpaw may be at risk of missing even more time after sitting out the first five months of the season due to a shoulder issue.

Nationals manager Dave Martinez said Tuesday that Cavalli (elbow) will continue to work through his throwing program but won't pitch in games before the end of the season, Andrew Golden of The Washington Post reports.

The right-hander began the season on the injured list while completing his recovery from Tommy John Surgery in May 2023, but a "dead arm" phase over the summer derailed his rehab assignment. Cavalli will continue to build up his arm over the final weeks of the regular season, but he'll head into 2025 with plenty of uncertainty coming off consecutive lost seasons.

Dodgers manager Dave Roberts said Tuesday that Gonsolin (elbow) will make another rehab appearance with Triple-A Oklahoma City before potentially returning from the 60-day injured list, Fabian Ardaya of The Athletic reports.

The right-hander has two rehab outings under his belt with Oklahoma City, and he allowed two runs on five hits and a walk over 2.2 innings during the most recent appearance Sunday. Los Angeles is in need of rotation help, but that doesn't necessarily mean Gonsolin will start once he completes his rehab program from last September's Tommy John surgery. There's also no guarantee the 30-year-old is included on the playoff roster.

Reds manager David Bell said Tuesday that Lodolo (finger) won't return from the 15-day injured list before the end of the season, Mark Sheldon of MLB.com reports.

The left-hander will end up missing the final five-plus weeks of the season due to the sprained finger he sustained Aug. 22 against the Pirates. Lodolo should have plenty of time to get healthy before the start of spring training and closes out the 2024 season with a 4.76 ERA, 1.20 WHIP and 122:37 K:BB over 115.1 innings (21 starts).

Cubs manager Craig Counsell announced Tuesday that Steele (elbow) will be reinstated from the 15-day injured list to start Wednesday against the Athletics, Ryan Herrera of AllCHGO.com reports.

The left-hander landed on the shelf after experiencing elbow tendinitis following his last start Aug. 27 in Pittsburgh, and he'll be back with the Cubs for the final week and a half of the campaign. If Chicago sticks to a five-man rotation, Steele tentatively lines up for three starts before the end of the regular season. The 29-year-old has a 3.09 ERA, 1.09 WHIP and 131:34 K:BB across 128 innings this season.

Red Sox manager Alex Cora said Tuesday that there's a "big chance" Houck (shoulder) will start Wednesday's game against the Rays, Christopher Smith of MassLive.com reports.

The 28-year-old was scratched from his scheduled start Friday versus the Yankees after receiving extra rest between outings in order to combat a "dead arm" phase, but he's now on the cusp of making his first start since Sept. 5. Assuming Houck pitches Tuesday as indicated by Cora, the right-hander could have some workload limitations while making his first start in two weeks.

Senga (calf) threw a bullpen session and did some pitchers' fielding practice drills Tuesday, Laura Albanese of Newsday reports.

Mets manager Carlos Mendoza said afterward that it remains possible Senga will return sometime during the final week of the regular season. If that happens, it will almost certainly have to be in a relief role, as Senga does not have time to get stretched back out to start.

Rays manager Kevin Cash said Tuesday that Springs (elbow) is feeling better but will not return from the 15-day injured list this season, Marc Topkin of the Tampa Bay Times reports.

Springs landed on the IL earlier this month with left elbow fatigue, roughly six weeks after he returned to the majors following a long rehab from Tommy John surgery. While Springs' current elbow issue doesn't seem to be overly concerning, the Rays would have little to gain by rushing him back before the regular season concludes.

Orioles general manager Mike Elias said Tuesday that it's possible Rodriguez (lat) temporarily pitches out of the bullpen when he eventually returns from the 15-day injured list, Jacob Calvin Meyer of The Baltimore Sun reports.

Rodriguez is throwing off a mound and is "moving in the right direction," per Elias, as the right-hander works his way back from a lat strain. However, he is simply running out of time to get built back up before the end of the regular season, so the Orioles might have no choice but to use him in relief initially as they rebuild his stamina on the fly. Rodriguez has been sidelined since early August.