| Year | AB | H | R | HR | RBI | BB | SO | SB | AVG | Rate |
| 2026 proj | 479 | 135 | 62 | 11 | 55 | 42 | 69 | 4 | 0.282 | 28.6 |
| 2026 | 74 | 19 | 8 | 3 | 8 | 10 | 13 | 1 | 0.257 | 14.9 |
| 2025 | 460 | 132 | 64 | 10 | 50 | 42 | 67 | 3 | 0.287 | 28.2 |
| 2024 | 587 | 163 | 65 | 14 | 73 | 47 | 81 | 5 | 0.278 | 33.4 |
| Date | News |
| 5/08/26 | Mariners welcome back Brendan Donovan into lineup after injury. The Mariners get one of their best hitters back on Friday as Brendan Donovan officially returns to action, playing third base and hitting leadoff. Source: https://www.seattletimes.com/sports/mariners/marin... |
| 5/07/26 | Mariners’ Brendan Donovan set to return to lineup Friday. Brendan Donovan, the Mariners’ third baseman and leadoff hitter, is traveling to Chicago to meet the team and is expected to be activated off the injured list. Source: https://www.seattletimes.com/sports/mariners/marin... |
| 5/01/26 | Mariners 3B Donovan set for rehab assignment. Mariners third baseman Brendan Donovan will begin a rehab assignment with Double-A Arkansas on Monday, general manager Justin Hollander said. Source: https://www.espn.com/mlb/story/_/id/48650657/marin... |
| 4/26/26 | Revisiting Mariners’ Brendan Donovan trade with Cardinals | Mariners extra. After being the centerpiece of the Mariners' trade with the Cardinals for third baseman Brendan Donovan switch-pitcher Jurrangelo Cijntje has struggled lately. Source: https://www.seattletimes.com/sports/mariners/revis... |
| 4/20/26 | Mariners put Donovan on 10-day IL, add Wilson. Mariners third baseman Brendan Donovan was placed on the 10-day injured list retroactive to Saturday with a left groin muscle strain. Source: https://www.espn.com/mlb/story/_/id/48545014/marin... |
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