Marlins Roster & Staff
Transactions
| Date | Transaction |
| 09/30/19 | Miami Marlins recalled Jesus Sanchez from New Orleans Baby Cakes. |
| 09/30/19 | Miami Marlins activated RHP Austin Brice from the 10-day injured list. |
| 09/30/19 | Miami Marlins activated LF Cesar Puello from the 10-day injured list. |
| 09/30/19 | Miami Marlins recalled Jorge Guzman from Jacksonville Jumbo Shrimp. |
| 09/30/19 | Miami Marlins recalled Jordan Holloway from Jupiter Hammerheads. |
| 09/30/19 | Miami Marlins recalled Monte Harrison from New Orleans Baby Cakes. |
| 09/21/19 | Jordan Yamamoto roster status changed by Miami Marlins. |
| 09/16/19 | Miami Marlins activated LHP Josh D. Smith. |
| 09/14/19 | Miami Marlins claimed LHP Josh D. Smith off waivers from Cleveland Indians. |
| 09/14/19 | Miami Marlins transferred SS JT Riddle from the 10-day injured list to the 60-day injured list. Right forearm strain. |
| 09/05/19 | Miami Marlins signed free agent LHP Juan Caba to a minor league contract. |
| 09/05/19 | Miami Marlins sent C Wilkin Castillo outright to New Orleans Baby Cakes. |
| 09/05/19 | Miami Marlins recalled LHP Jose Quijada from New Orleans Baby Cakes. |
| 09/03/19 | Miami Marlins recalled CF Magneuris Sierra from New Orleans Baby Cakes. |
| 09/03/19 | Miami Marlins selected the contract of C Tyler Heineman from New Orleans Baby Cakes. |
| 09/03/19 | Miami Marlins transferred 3B Brian Anderson from the 10-day injured list to the 60-day injured list. Fractured left 5th metacarpal. |
| 09/03/19 | Miami Marlins designated C Wilkin Castillo for assignment. |
| 09/03/19 | Miami Marlins selected the contract of LHP Brian Moran from New Orleans Baby Cakes. |
| 09/01/19 | Miami Marlins activated RHP Jose Urena from the 60-day injured list. |
| 09/01/19 | Miami Marlins activated RHP Tayron Guerrero from the 10-day injured list. |
| 09/01/19 | Miami Marlins activated SS Miguel Rojas from the 10-day injured list. |