| 7/1/17 |
Miami Marlins optioned LHP Justin Nicolino to New Orleans Baby Cakes. |
| 7/1/17 |
Miami Marlins signed SS Elliott Barzilli. |
| 7/1/17 |
Miami Marlins recalled RHP Tom Koehler from New Orleans Baby Cakes. |
| 7/2/17 |
RHP Tyler Frohwirth roster status changed by Miami Marlins. |
| 7/2/17 |
Miami Marlins signed free agent C Jonathan Chinchilla to a minor league contract. |
| 7/2/17 |
Miami Marlins signed free agent SS Julio Machado to a minor league contract. |
| 7/2/17 |
Miami Marlins signed free agent OF Adonis Giron to a minor league contract. |
| 7/2/17 |
Miami Marlins signed free agent P Delvis Alegre to a minor league contract. |
| 7/2/17 |
Miami Marlins signed free agent SS Ynmanol Marinez to a minor league contract. |
| 7/2/17 |
Miami Marlins signed free agent C Jhonaiker Osori to a minor league contract. |
| 7/2/17 |
Miami Marlins signed free agent RHP Zaquiel Puentes to a minor league contract. |
| 7/3/17 |
Miami Marlins signed free agent SS Cleuluis Rondon to a minor league contract. |
| 7/4/17 |
Miami Marlins designated LHP Jeff Locke for assignment. |
| 7/4/17 |
Miami Marlins recalled RHP Drew Steckenrider from New Orleans Baby Cakes. |
| 7/7/17 |
Miami Marlins placed RHP Edinson Volquez on the 10-day disabled list retroactive to July 6, 2017. Left knee tendinitis |
| 7/7/17 |
Miami Marlins signed C J.D. Osborne. |
| 7/7/17 |
Miami Marlins signed C Jan Mercado. |
| 7/7/17 |
Miami Marlins signed RHP Matt Givin. |
| 7/7/17 |
Miami Marlins signed LHP Dakota Bennett. |
| 7/7/17 |
Miami Marlins signed RHP Taylor Braley. |
| 7/7/17 |
Miami Marlins signed RHP Colton Hock. |
| 7/7/17 |
Miami Marlins recalled Chris O'Grady from New Orleans Baby Cakes. |
| 7/8/17 |
Miami Marlins sent 3B Miguel Rojas on a rehab assignment to Jupiter Hammerheads. |
| 7/8/17 |
Miami Marlins sent 3B Miguel Rojas on a rehab assignment to Jupiter Hammerheads. |
| 7/9/17 |
Miami Marlins sent LHP Jeff Locke outright to New Orleans Baby Cakes. |
| 7/11/17 |
Miami Marlins sent 3B Miguel Rojas on a rehab assignment to Jacksonville Jumbo Shrimp. |
| 7/13/17 |
Miami Marlins sent 3B Miguel Rojas on a rehab assignment to Jupiter Hammerheads. |
| 7/13/17 |
Miami Marlins signed free agent LHP Jared Lakind to a minor league contract. |
| 7/18/17 |
Miami Marlins activated 3B Miguel Rojas from the 60-day disabled list. |
| 7/18/17 |
Miami Marlins placed 3B Martin Prado on the 10-day disabled list. Right knee sprain. |
| 7/18/17 |
Miami Marlins optioned RHP Drew Steckenrider to New Orleans Baby Cakes. |
| 7/18/17 |
Miami Marlins recalled LHP Adam Conley from New Orleans Baby Cakes. |
| 7/20/17 |
Miami Marlins traded RHP David Phelps to Seattle Mariners for RHP Brandon Miller, CF Brayan Hernandez, RHP Lukas Schiraldi and RHP Pablo Lopez. |
| 7/20/17 |
Miami Marlins traded RHP David Phelps to Seattle Mariners for RHP Brandon Miller, CF Brayan Hernandez, RHP Lukas Schiraldi and RHP Pablo Lopez. |
| 7/20/17 |
Miami Marlins traded RHP David Phelps to Seattle Mariners for RHP Brandon Miller, CF Brayan Hernandez, RHP Lukas Schiraldi and RHP Pablo Lopez. |
| 7/20/17 |
Miami Marlins traded RHP David Phelps to Seattle Mariners for RHP Brandon Miller, CF Brayan Hernandez, RHP Lukas Schiraldi and RHP Pablo Lopez. |
| 7/20/17 |
Miami Marlins traded RHP David Phelps to Seattle Mariners for RHP Brandon Miller, CF Brayan Hernandez, RHP Lukas Schiraldi and RHP Pablo Lopez. |
| 7/21/17 |
Miami Marlins recalled RHP Brian Ellington from New Orleans Baby Cakes. |
| 7/24/17 |
Miami Marlins optioned Tom Koehler to New Orleans Baby Cakes. |
| 7/24/17 |
Miami Marlins recalled Hunter Cervenka from New Orleans Baby Cakes. |
