Marlins Roster & Staff
Transactions
| Date | Transaction |
| 09/29/25 | Miami Marlins activated LF Kyle Stowers from the 10-day injured list. |
| 09/29/25 | Miami Marlins activated CF Dane Myers from the 10-day injured list. |
| 09/29/25 | Miami Marlins activated RHP Ryan Gusto from the 15-day injured list. |
| 09/29/25 | Miami Marlins recalled 3B Deyvison De Los Santos from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled LHP Dax Fulton from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled SS Jared Serna from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled RHP Freddy Tarnok from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled RHP Adam Mazur from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled CF Victor Mesa Jr. from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled RHP Christian Roa from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled 2B Jack Winkler from Jacksonville Jumbo Shrimp. |
| 09/29/25 | Miami Marlins recalled SS Maximo Acosta from Jacksonville Jumbo Shrimp. |
| 09/24/25 | Miami Marlins placed CF Dane Myers on the 10-day injured list. Right knee laceration. |
| 09/24/25 | Chicago White Sox claimed CF Derek Hill off waivers from Miami Marlins. |
| 09/24/25 | Miami Marlins recalled LF Joey Wiemer from Jacksonville Jumbo Shrimp. |
| 09/22/25 | Miami Marlins designated CF Derek Hill for assignment. |
| 09/22/25 | Miami Marlins activated LF Griffin Conine. |
| 09/22/25 | Miami Marlins activated RHP Edward Cabrera from the 15-day injured list. |
| 09/22/25 | Miami Marlins activated CF Derek Hill from the 10-day injured list. |
| 09/22/25 | Miami Marlins optioned LF Joey Wiemer to Jacksonville Jumbo Shrimp. |
| 09/22/25 | Miami Marlins optioned RHP Adam Mazur to Jacksonville Jumbo Shrimp. |
| 09/19/25 | Miami Marlins activated RHP Freddy Tarnok from the 15-day injured list. |
| 09/19/25 | Miami Marlins optioned RHP Freddy Tarnok to Jacksonville Jumbo Shrimp. |
| 09/18/25 | Miami Marlins sent CF Derek Hill on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/17/25 | C Brian Navarreto changed number to 70. |
| 09/16/25 | C Brian Navarreto changed number to 21. |
| 09/15/25 | Miami Marlins activated RHP Tyler Phillips from the paternity list. |
| 09/15/25 | Miami Marlins activated CF Dane Myers from the 10-day injured list. |
| 09/15/25 | Miami Marlins activated 3B Graham Pauley from the 10-day injured list. |
| 09/15/25 | Miami Marlins activated 3B Connor Norby from the 10-day injured list. |
| 09/15/25 | Miami Marlins optioned RHP Christian Roa to Jacksonville Jumbo Shrimp. |
| 09/15/25 | Miami Marlins optioned CF Victor Mesa Jr. to Jacksonville Jumbo Shrimp. |
| 09/15/25 | Miami Marlins optioned SS Maximo Acosta to Jacksonville Jumbo Shrimp. |
| 09/15/25 | Miami Marlins optioned 2B Jack Winkler to Jacksonville Jumbo Shrimp. |
| 09/14/25 | Miami Marlins sent RHP Freddy Tarnok on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/14/25 | Miami Marlins sent RHP Freddy Tarnok on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/13/25 | Miami Marlins placed RHP Tyler Phillips on the paternity list. |
| 09/13/25 | Miami Marlins sent RHP Seth Martinez outright to Jacksonville Jumbo Shrimp. |
| 09/13/25 | Miami Marlins recalled RHP Christian Roa from Jacksonville Jumbo Shrimp. |
| 09/11/25 | Miami Marlins sent 3B Connor Norby on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/11/25 | Miami Marlins sent CF Dane Myers on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/11/25 | Miami Marlins activated LHP Ryan Weathers from the 60-day injured list. |
| 09/11/25 | Miami Marlins sent CF Dane Myers on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/11/25 | Miami Marlins sent 3B Connor Norby on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/11/25 | Miami Marlins designated RHP Seth Martinez for assignment. |
| 09/10/25 | Miami Marlins sent 3B Graham Pauley on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/10/25 | Miami Marlins sent 3B Graham Pauley on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/09/25 | Miami Marlins sent RHP Luarbert Arias outright to Jacksonville Jumbo Shrimp. |
| 09/08/25 | Miami Marlins activated RHP Janson Junk from the 15-day injured list. |
| 09/08/25 | Miami Marlins optioned RHP Christian Roa to Jacksonville Jumbo Shrimp. |
| 09/07/25 | Miami Marlins sent LF Griffin Conine on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/06/25 | Miami Marlins released RHP Declan Cronin. |
| 09/06/25 | Miami Marlins placed RHP Freddy Tarnok on the 15-day injured list retroactive to September 3, 2025. Left ankle sprain. |
| 09/06/25 | Miami Marlins selected the contract of RHP Christian Roa from Jacksonville Jumbo Shrimp. |
| 09/05/25 | Miami Marlins sent LF Kyle Stowers on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/05/25 | Miami Marlins placed CF Derek Hill on the 10-day injured list retroactive to September 2, 2025. Right hamstring strain. |
| 09/05/25 | Miami Marlins designated RHP Luarbert Arias for assignment. |
| 09/05/25 | Miami Marlins placed 3B Connor Norby on the 10-day injured list retroactive to September 4, 2025. Left quad strain. |
| 09/05/25 | Miami Marlins sent LF Kyle Stowers on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/05/25 | Miami Marlins recalled SS Maximo Acosta from Jacksonville Jumbo Shrimp. |
| 09/05/25 | Miami Marlins selected the contract of 2B Jack Winkler from Jacksonville Jumbo Shrimp. |
| 09/05/25 | Miami Marlins recalled LHP Josh Simpson from Jacksonville Jumbo Shrimp. |
| 09/02/25 | Miami Marlins sent RHP Janson Junk on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 09/01/25 | Miami Marlins placed RHP Edward Cabrera on the 15-day injured list retroactive to August 31, 2025. Right elbow sprain. |
| 09/01/25 | Miami Marlins transferred RHP Tyler Zuber from the 15-day injured list to the 60-day injured list. Right lat strain. |
| 09/01/25 | Miami Marlins transferred RHP Anthony Bender from the 15-day injured list to the 60-day injured list. Right tibial stress reaction. |
| 09/01/25 | Miami Marlins recalled RHP Michael Petersen from Jacksonville Jumbo Shrimp. |
| 09/01/25 | Miami Marlins selected the contract of C Brian Navarreto from Jacksonville Jumbo Shrimp. |
| 09/01/25 | Miami Marlins selected the contract of RHP Luarbert Arias from Jacksonville Jumbo Shrimp. |