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Reese Olson SP | DET
Tigers' Reese Olson: Begins throwing program
Olson (shoulder) has begun a throwing program, Chris McCosky of The Detroit News reports.
Olson has already been ruled out for the regular season, but it's an encouraging sign that he's started throwing. He's been sidelined since late July due to a shoulder strain. If his recovery continues without interruption, Olson could be healthy at some point during the playoffs.
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Janson Junk SP | MIA
Marlins' Janson Junk: Cleared to return Monday
Junk (elbow) will be activated from the 15-day injured list and start Monday against the Nationals, Christina De Nicola of MLB.com reports.
Junk pitched well in what will be his lone rehab start, striking out eight over five innings of one-run ball Tuesday at Triple-A Jacksonville. The right-hander has been sidelined since late August with right ulnar nerve irritation in his pitching elbow. Junk has collected a 4.09 ERA and 61:10 K:BB over 88 innings covering 12 starts and five relief appearances for Miami in 2025.
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Ryan Weathers SP | NYY
Marlins' Ryan Weathers: Rejoining rotation next week
Weathers (lat) will rejoin the Marlins' rotation in the middle of next week, Christina De Nicola of MLB.com reports.
The exact date of Weathers' return had not been confirmed, but he appears lined up to start Sept. 10 against the Nationals. Weathers has been sidelined since early June with a left lat strain but has been cleared to return after making a couple rehab starts. The left-hander threw 68 pitches and went 4.2 innings in his last rehab outing, so he will have a relatively limited workload in next week's return to the Marlins' rotation.
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Will Brennan RF | SF
Guardians' Will Brennan: Undergoes sports hernia surgery
Brennan (elbow) recently underwent sports hernia surgery, Tim Stebbins of MLB.com reports.
Brennan is still rehabbing from Tommy John surgery but felt some nagging discomfort in his groin while doing sprinting and agility drills. He remains on track to be ready for the start of spring training next year.
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Zach Dezenzo LF | HOU
Astros' Zach Dezenzo: Pulled off rehab assignment
Dezenzo (hand) has been pulled off his minor-league rehab asssignment due to an elbow sprain, Chandler Rome of The Athletic reports.
Dezenzo had been rehabbing from a left hand capsule strain at Triple-A Sugar Land, but he's been pulled off the assignment after picking up a sprained elbow. The 25-year-old's last minor-league appearance came Sept. 2. At this point, it's unclear when Dezenzo will be activated.
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Nolan Arenado 3B | ARI
Cardinals' Nolan Arenado: Aiming for Sept. 15 return
Arenado (shoulder) expects to begin a rehab assignment next week and return from the 10-day injured list Sept. 15 for the start of the Cardinals' homestand, Jeff Jones of the Belleville News-Democrat reports.
Arenado has been rehabbing a right shoulder strain at the team's spring training complex and is nearly ready to play in rehab games, likely at Double-A Springfield. Barring any setbacks, Arenado is expected back for the beginning of the Cardinals' final homestand of the season.
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Pavin Smith 1B | ARI
Diamondbacks' Pavin Smith: Transferred to 60-day IL
The Diamondbacks transferred Smith (quadriceps) to the 60-day injured list Friday, Alex Weiner of ArizonaSports.com reports.
Smith's season is over after suffering a strained quad earlier this week. The lefty-hitting outfielder and first baseman appeared in just 87 games this season, slashing .258/.362/.434 with eight home runs, 28 RBI, 17 runs scored, two stolen bases and a 41:92 BB:K across 288 trips to the plate.
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Gary Sanchez C | MIL
Orioles' Gary Sanchez: Starting rehab assignment next week
Sanchez (knee) is with the team in Baltimore on Friday and will head out on a rehab assignment in five days, Rich Dubroff of BaltimoreBaseball.com reports.
Sanchez has been sidelined since early July due to a sprained right knee, but he's getting close to heading out on a rehab assignment. His current timeline would put him on track to return before the end of the regular season, but he may not have much playing time to come back to if Adley Rutschman (oblique) and Samuel Basallo are healthy.
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Elvin Rodriguez RP | ARI
Diamondbacks' Elvin Rodriguez: Claimed by Arizona
The Diamondbacks claimed Rodriguez off waivers from the Orioles on Friday, Alex Weiner of ArizonaSports.com reports.
Rodriguez has been optioned to Triple-A Reno. The Orioles designated Rodriguez for assignment earlier in the week. He's appeared in seven games with the Brewers and Orioles this season, logging a 9.15 ERA, 1.68 WHIP and 18:7 K:BB across 19.2 innings.