| Week | Add | Drop |
| Pre-Season |
Round 1: RP Kevin Ginkel - Ari Round 2: 3B Elehuris Montero - Col Round A: SP Yoshinobu Yamamoto - LAD |
Round 1: C Freddy Fermin - KC Round A: C Connor Wong - Bos |
| Week 1 |
Round 2: OF Nelson Velazquez - KC | |
| Week 2 |
Round 1: OF Heston Kjerstad - Bal |
Round 1: C Elias Diaz - Col |
| Week 3 |
Round 1: SP Steven Matz - StL | |
| Week 4 |
Round 1: RP James McArthur - KC |
Round 1: SP Chase Silseth - LAA |
| Week 5 |
Round 1: OF Wilyer Abreu - Bos Round 2: 3B Curtis Mead - TB |
Round 1: SS Tim Anderson - Mia Round 2: 3B Elehuris Montero - Col |
| Week 6 |
Round 1: OF Jordan Beck - Col Round 2: SP Garrett Crochet - ChA |
Round 1: RP Adbert Alzolay - ChN Round 2: SP Steven Matz - StL |
| Week 7 |
Round 1: 3B Curtis Mead - TB |
| 1st Team | 2nd Team |
| Pre-Season | |
| Seattle Steelheads | The Plantation |
|
1B
Ryan Mountcastle
Bal |
Round 5, 6th Pick (RP David Bednar Pit) |
| Pre-Season | |
| Seattle Steelheads | Fightin Phils |
|
Round 5, 6th Pick (RP David Bednar Pit) |
2B
Zack Gelof
Oak |
| Pre-Season | |
| Seattle Steelheads | The Plantation |
|
Round 5, 2nd Pick (C Jonah Heim Tex) |
Round 1, 6th Pick (OF Christopher Morel ChN) |
| Week 6 | |
| Seattle Steelheads | The Shogun of Harlem |
|
C
Shea Langeliers
Oak OF Christopher Morel ChN SP Tanner Bibee Cle |
1B
Ryan O'Hearn
Bal OF Hunter Goodman Col 3B Tyler Black Mil |
| Week 7 | |
| Seattle Steelheads | Fightin Phils |
|
SS
Willy Adames
Mil 1B Ty France Sea SP Cristian Javier Hou RP Kevin Ginkel Ari |
C
Francisco Álvarez
NYN SP Max Meyer Mia SP Taj Bradley TB SP Christian Scott NYN |