Scherzer (shoulder) will start Saturday's game against the Mariners, Shawn McFarland of The Dallas Morning News reports.

Scherzer appeared in a rehab game with Triple-A Round Rock on Saturday, during which he threw four shutout innings while striking out eight batters and walking one. Following his elite performance, the 40-year-old righty is now slated to make his first start in the majors since July 30, and he'll have the luxury of being welcomed back by a Mariners offense that ranks 25th in MLB with a .675 OPS on the season.

Montero (5-6) earned the win Tuesday over the Rockies, allowing three hits and no walks in a complete-game shutout. He struck out five.

It was a stellar performance from the 24-year-old Montero, who needed just 96 pitches to record all 27 outs. He allowed just three hits, all singles, while inducing three double-play balls. Montero's performance is especially impressive considering his struggles of late -- the right-hander had posted a 5.81 ERA in his previous 10 starts. Overall, Montero sports a 4.88 ERA with a 1.28 WHIP and 65:26 K:BB across 83 innings in his rookie campaign. He'll look to build on Tuesday's outing in his next start, tentatively scheduled for this weekend at home versus the Orioles.

DeGrom (elbow) will start Friday's game against the Mariners, Shawn McFarland of The Dallas Morning News reports.

DeGrom has been on the injured list all season while working his way back from a Tommy John procedure he underwent last June. Now that he's made four rehab appearances in the minors, during which he allowed just one earned run across 10.2 innings while striking out 15 batters, he's been given the green light to make his season debut and help out the Rangers' rotation for the final several weeks of the season. Although the four-time All-Star hasn't pitched since April 2023, his minor-league performance and favorable matchup against a weak Mariners offense suggest that he'll pick up right where he left off during his first start back in the majors.

Lively was removed from his start Tuesday versus the White Sox after getting hit in the leg by a comebacker, Daryl Van Schouwen of the Chicago Sun-Times reports.

Lively needed to be helped off the field after taking a 96-mph line drive off his right thigh in the second inning, but he managed to escape the incident with nothing more than a bruise. The Guardians will likely keep an eye on him over the next few days, but there's a good chance the 32-year-old righty will make his next start -- tentatively scheduled to come against the Twins on Monday. Lively pitched two shutout innings while striking out two batters and walking none before his removal Tuesday.

Lopez was removed from Tuesday's game against the Nationals due to right shoulder tightness.

Lopez only managed to last one inning in Tuesday's contest, during which he allowed one hit and struck out one batter. His velocity was also noticeably down, and it now appears his shoulder may have had something to do with that. There's no telling at the moment if he'll require a trip to the injured list, though Atlanta may wait a few days to see how he recovers before making a decision.

Glasnow (elbow) will face hitters in a simulated game over the weekend, Juan Toribio of MLB.com reports.

Glasnow reportedly felt good coming out of his bullpen session Tuesday, and he's now been given the green light to throw 2-to-3 simulated innings against live hitters. Assuming everything goes smoothly this weekend, the 31-year-old righty will likely rejoin Los Angeles' rotation sometime next week and build up his workload while pitching in big-league games.

Lopez (undisclosed) exited Tuesday's start against the Nationals after one inning, David O'Brien of The Athletic reports.

Lopez pitched a scoreless first inning before meeting with manager Brian Snitker, pitching coach Rick Kranitz and a trainer. Lopez's velocity was down a couple notches in the frame and he was ultimately removed from the contest. It's unclear what the right-hander is dealing with, but more information on his status will likely be provided in the near future. In the meantime, Jesse Chavez replaced him on the mound against Washington.

Ray (hamstring) is scheduled to throw 50-to-60 pitches in a bullpen session Wednesday, Shayna Rubin of the San Francisco Chronicle reports.

The left-hander threw two- and three-inning simulated games Wednesday and Saturday, respectively, and he'll continue building up his workload with a bullpen session. Ray landed on the shelf Aug. 27 due to the hamstring strain, and he appears to be closing in on his return to San Francisco's rotation.

Tigers manager A.J. Hinch said Olson (shoulder) will rejoin the major-league club to be evaluated after a successful rehab start Tuesday with Triple-A Toledo, Evan Woodbery of MLive.com reports.

The right-hander threw 45 pitches across three scoreless innings Tuesday, which is only a minor increase from the 39 pitches and two innings he tossed during his first rehab outing Sept. 5. Hinch mentioned the possibility of a third rehab start, but the next steps in Olson's rehab won't be determined until he's checked out back with the big club.

Castillo was placed on the 15-day injured list Tuesday due to a Grade 2 left hamstring strain, Ryan Divish of The Seattle Times reports.

The right-hander already received a platelet-rich-plasma injection and hopes to be available after spending the 15-day minimum on the shelf. Even in a best-case scenario, Castillo will only be able to rejoin the Mariners for one or maybe two starts before the end of the regular season. Seattle is currently three games back of the final AL wild-card spot and is tied with two other teams, and the playoff positioning could affect how quickly the organization elects to bring Castillo back.