| Week | Add | Drop |
| Pre-Season |
Round A: RP Robert Stephenson - LAA Round B: RP Clay Holmes - NYA |
Round A: SP Patrick Sandoval - LAA Round B: SP Reid Detmers - LAA |
| Week 1 |
Round 1: 1B Jared Walsh - ChA | |
| Week 2 |
Round 1: SP Paul Blackburn - Oak |
Round 1: SP Louie Varland - Min |
| Week 3 |
Round 1: SP Martin Perez - Pit |
Round 1: RP Yuki Matsui - SD |
| Week 4 |
Round 1: SS Matt Shaw - ChN Round 2: OF Bryan De La Cruz - Mia |
Round 1: 3B Curtis Mead - TB Round 2: 2B Davis Schneider - Tor |
| Week 5 |
Round 1: 3B Orelvis Martinez - Tor Round 2: SP Keaton Winn - SF | |
| Week 6 |
Round 1: 1B Tyler Nevin - Oak Round 2: SP Cole Irvin - Bal |
Round 1: 1B Jared Walsh - ChA Round 2: SP Martin Perez - Pit |
| 1st Team | 2nd Team |
| Pre-Season | |
| Marlins | BackAftaThis |
|
SP
Tarik Skubal
Det |
Round 6, 11th Pick (2B Jorge Polanco Sea) |
| Pre-Season | |
| Marlins | Mayo on your Trout |
|
Round 2, 6th Pick (3B Isaac Paredes TB) |
Round 11, 7th Pick (OF Daulton Varsho Tor) |
| Week 7 | |
| Marlins | BackAftaThis |
|
OF
Kyle Tucker
Hou |
SP
Andrew Abbott
Cin OF Spencer Steer Cin |