This page will be updated throughout the year with all the latest Marlins injury news and transactions.
INJURY UPDATES
RHP Michael Petersen
Injury: Right hamstring tightness
Expected return: TBD
Status: Exited his July 11 outing after one-plus inning and 26 pitches when seen shaking his right leg a little bit. Will undergo further tests to determine severity. (updated: July 12)
RHP William Kempner
Injury: Right elbow sprain
IL date: July 12 (15-day IL)
Expected return: TBD
Status: Had been feeling something off and on in his arm for several weeks but got to the point where it affected him enough to say something. Underwent further testing July 12 but the results have yet to be revealed. (updated: July 12) More >>
OF Owen Caissie
Injury: Right calf strain
IL date: July 9 (10-day IL)
Expected return: Week of July 27
Status: MRI provided a return-to-play timeline of 2-4 weeks. Felt some tightness on July 7, then good pregame July 8. Tightness came back on defense enough that he exited the game before the top of the second inning and prior to getting an at-bat. (updated: July 9) More >>
SS Aiva Arquette (Marlins' No. 3 prsopect; No. 41 overall)
Injury: Left thumb
IL date: June 30 (7-day Minor League IL)
Expected return: Mid-August
Status: Hadn't played since June 26. Previously missed time due to core muscle surgery and right wrist soreness. (updated: July 1) More >>
RHP Anthony Bender
Injury: Right shin stress reaction
IL date: June 30 (15-day IL)
Expected return: After All-Star break
Status: Had been managing the issue, which is similar to the one he had in 2025, all season. Got to the point that he needed to rest it. (updated: June 30) More >>
RHP Josh Ekness
Injury: Right calf strain
IL date: June 1 (60-day IL, retroactive to May 29)
Expected return: July
Status: Injured during warmup drills on May 31. Timeline for return to play was approximately six weeks. Transferred to 60-day IL on June 21. (updated: June 21) More >>
LHP Thomas White (Marlins' No. 1 prospect; No. 21 overall)
Injury: Left shoulder capsular sprain
IL date: May 20 (7-day Minor League IL, retroactive to May 19)
Expected return: Mid-August to September
Status: Estimated timeline for return was 12-16 weeks from date of injury. (updated: June 5) More >
LHP Andrew Nardi
Injury: Left rib cage stress reaction
IL date: May 30 (60-day IL, retroactive to May 28)
Expected return: September
Status: First felt the discomfort in mid-April in Atlanta but it never affected his pitching, just the buildup. Had trouble breathing leading up to testing. Transferred to 60-day IL on June 1. (updated: June 1) More >
LHP Robby Snelling (Marlins' No. 2 prospect; No. 38 overall)
Injury: Left elbow UCL repair surgery with an internal brace
IL date: May 13 (60-day IL on May 21)
Expected return: Mid-2027
Status: Underwent surgery on May 22 as recommended by Dr. Keith Meister. Recovery period calls for 10-12 months. (updated: May 22) More >>
RHP Kevin Defrank (Marlins' No. 5 prospect)
Injury: Right biceps
IL date: May 7 (60-day Minor League IL)
Expected return: At least 60 days
Status: No surgery required but also no timeline for a return. (updated: May 7) More >>
RHP Adam Mazur
Injury: UCL reconstruction with an internal brace (hybrid)
IL date: March 25 (60-day IL)
Expected return: 2027
Status: Underwent surgery, which has a recovery period of 13-14 months, on March 11. Experienced the discomfort on a pitch during his March 2 outing. (updated: March 25) More >>
RHP Ronny Henriquez
Injury: Right elbow UCL reconstruction surgery with an associated internal brace
IL date: Feb 12 (60-day IL)
Expected return: 2027
Status: Underwent the hybrid procedure in December. (updated: Feb. 12) More >>
LATEST TRANSACTIONS
July 12
• RHP William Kempner: Placed on 15-day injured list More >>
• LHP Dax Fulton: Recalled from Triple-A Jacksonville
July 9
• OF Owen Caissie: Placed on 10-day injured list
• LHP John King: Placed on 15-day injured list
• RHP Janson Junk: Returned from rehab and reinstated from 15-day IL
• RHP Zach Brzykcy: Optioned to Triple-A Jacksonville
• RHP Ryan Gusto: Recalled from Triple-A Jacksonville
• OF Rece Hinds: Recalled from Triple-A Jacksonville
July 3
• RHP William Kempner: Recalled from Triple-A Jacksonville
• RHP Ryan Gusto: Optioned to Triple-A Jacksonville