Tacoma Rainiers
Triple-A · MLB affiliate: Seattle Mariners
Home venue: Cheney Stadium — Tacoma, WA
Current prospects
| Rank | Prospect | Position | On roster since |
|---|---|---|---|
| 9 | Colt Emerson | Shortstop | 2026-04-01 |
Historical prospects
One row per stint — players with multiple stints appear multiple times.
| From | To | Prospect | Year | Rank | Position |
|---|---|---|---|---|---|
| 2025-09-16 | 2026-03-30 | Colt Emerson | 2026 | 9 | Shortstop |
| 2025-09-16 | 2026-03-30 | Colt Emerson | 2025 | 20 | Shortstop |
| 2025-09-16 | 2026-03-30 | Colt Emerson | 2024 | 87 | Shortstop |
| 2025-07-18 | 2025-08-31 | Harry Ford | 2025 | 65 | Catcher |
| 2025-07-18 | 2025-08-31 | Harry Ford | 2026 | 71 | Catcher |
| 2025-07-18 | 2025-08-31 | Harry Ford | 2024 | 38 | Catcher |
| 2025-03-28 | 2025-07-10 | Harry Ford | 2025 | 65 | Catcher |
| 2025-03-28 | 2025-07-10 | Harry Ford | 2024 | 38 | Catcher |
| 2025-03-28 | 2025-07-10 | Harry Ford | 2026 | 71 | Catcher |
| 2025-03-28 | 2025-05-30 | Cole Young | 2024 | 37 | Shortstop |
| 2025-03-28 | 2025-05-30 | Cole Young | 2025 | 49 | Shortstop |