| SS | 10-day-dl (The Seattle Mariners placed INF J.P. Crawford on the 10-day injured list.) | |
| LF | 10-day-dl (The Seattle Mariners placed OF Dominic Canzone on the 10-day injured list.) | |
| P | 15-day-dl (The Seattle Mariners placed RHP Matt Brash on the 15-day injured list with right elbow inflammation.) | |
| P | 60-day-dl (The Seatle Mariners transferred RHP Gregory Santos from the 15-day injured list to the 60-day injured list. ) | |
| P | 15-day-dl (The Seattle Mariners placed RHP Eduard Bazardo on the 15-day injured list with a right rotator cuff strain.) | |
| P | 15-day-dl (The Seattle Mariners placed RHP Bryan Woo on the 15-day injured list with elbow inflammation.) | |
| P | 60-day-dl (The Seattle Mariners announced that SP Jackson Kowar was placed on the 60-day injured list for a tear in his right UCL.) | |