Team fielding -- 2025 Seattle Mariners
Regular season -- as of 8/29/2025
| Primary |
| Pos | S | Name | G | GS | INN | PO | A | E | DP | TC | PCT | PB | SB | CS | SB% | PK |
| p | f | Thomas Harrington | 26 | 26 | 130.0 | 17 | 15 | 3 | 0 | 35 | .914 | | 26 | 6 | .813 | 2 |
| | | Ben Brown | 27 | 27 | 137.0 | 13 | 8 | 2 | 0 | 23 | .913 | | 24 | 12 | .667 | 0 |
| | | Tyler Glasnow | 16 | 16 | 90.2 | 3 | 13 | 0 | 1 | 16 | 1.000 | | 20 | 8 | .714 | 3 |
| | | Daniel Palencia | 34 | 13 | 94.2 | 8 | 7 | 0 | 0 | 15 | 1.000 | | 11 | 5 | .688 | 1 |
| | f | Emmanuel Clase | 40 | 0 | 49.0 | 2 | 9 | 2 | 0 | 13 | .846 | | 2 | 0 | 1.000 | 1 |
| | | Jeremiah Estrada | 57 | 0 | 63.1 | 5 | 7 | 0 | 0 | 12 | 1.000 | | 11 | 5 | .688 | 3 |
| | | Spencer Strider | 17 | 17 | 102.0 | 7 | 5 | 0 | 1 | 12 | 1.000 | | 16 | 7 | .696 | 2 |
| | | George Kirby | 17 | 17 | 98.2 | 3 | 7 | 1 | 0 | 11 | .909 | | 24 | 5 | .828 | 0 |
| | | Jhoan Duran | 57 | 0 | 78.2 | 4 | 3 | 3 | 1 | 10 | .700 | | 5 | 3 | .625 | 0 |
| | | Andres Munoz | 61 | 0 | 77.1 | 3 | 5 | 1 | 0 | 9 | .889 | | 9 | 0 | 1.000 | 0 |
| | | Abner Uribe | 43 | 0 | 52.2 | 2 | 7 | 0 | 0 | 9 | 1.000 | | 8 | 4 | .667 | 0 |
| | | Bryan Abreu | 58 | 0 | 61.1 | 3 | 5 | 0 | 0 | 8 | 1.000 | | 13 | 1 | .929 | 1 |
| | | Aaron Ashby | 12 | 7 | 36.0 | 0 | 8 | 0 | 0 | 8 | 1.000 | | 6 | 5 | .545 | 0 |
| | f | Emerson Hancock | 4 | 4 | 22.2 | 1 | 3 | 3 | 0 | 7 | .571 | | 7 | 4 | .636 | 1 |
| | f | Hunter Dobbins | 3 | 3 | 16.0 | 0 | 1 | 0 | 0 | 1 | 1.000 | | 4 | 2 | .667 | 0 |
| | | Eric Orze | 14 | 0 | 20.1 | 1 | 0 | 0 | 0 | 1 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | | Other | 42 | 5 | 76.2 | 4 | 6 | 1 | 0 | 11 | .909 | | 7 | 1 | .875 | 0 |
| | | Total | 528 | 135 | 1207.0 | 76 | 109 | 16 | 3 | 201 | .920 | | 194 | 68 | .740 | 14 |
| | | | | | | | | | | | | | | | | |
| c | f | Adley Rutschman | 86 | 86 | 730.2 | 800 | 51 | 4 | 0 | 855 | .995 | 5 | 126 | 40 | .759 | 1 |
| | | Samuel Basallo | 66 | 42 | 409.0 | 485 | 32 | 8 | 0 | 525 | .985 | 18 | 60 | 26 | .698 | 0 |
| | f | Francisco Alvarez | 10 | 7 | 67.1 | 67 | 2 | 1 | 0 | 70 | .986 | 3 | 8 | 2 | .800 | 0 |
| | | Total | 162 | 135 | 1207.0 | 1352 | 85 | 13 | 0 | 1450 | .991 | 26 | 194 | 68 | .740 | 1 |
| | | | | | | | | | | | | | | | | |
| 1b | | Spencer Horwitz | 87 | 87 | 772.0 | 666 | 59 | 6 | 37 | 731 | .992 | | | | | |
| | f | Adley Rutschman | 9 | 9 | 84.2 | 68 | 6 | 0 | 7 | 74 | 1.000 | | | | | |
| | | Samuel Basallo | 4 | 1 | 12.0 | 7 | 2 | 0 | 1 | 9 | 1.000 | | | | | |
| | | Other | 38 | 38 | 338.1 | 321 | 24 | 3 | 20 | 348 | .991 | | | | | |
| | | Total | 138 | 135 | 1207.0 | 1062 | 91 | 9 | 65 | 1162 | .992 | | | | | |
| | | | | | | | | | | | | | | | | |
| 2b | | Jackson Holliday | 135 | 135 | 1203.0 | 189 | 331 | 14 | 56 | 534 | .974 | | | | | |
| | | Cody Freeman | 3 | 0 | 4.0 | 0 | 1 | 0 | 0 | 1 | 1.000 | | | | | |
| | | Total | 138 | 135 | 1207.0 | 189 | 332 | 14 | 56 | 535 | .974 | | | | | |
| | | | | | | | | | | | | | | | | |
| 3b | | Royce Lewis | 77 | 77 | 683.2 | 46 | 127 | 7 | 7 | 180 | .961 | | | | | |
| | | Mark Vientos | 58 | 58 | 522.1 | 28 | 101 | 2 | 7 | 131 | .985 | | | | | |
| | | Cody Freeman | 1 | 0 | 1.0 | 0 | 1 | 0 | 0 | 1 | 1.000 | | | | | |
| | | Total | 136 | 135 | 1207.0 | 74 | 229 | 9 | 14 | 312 | .971 | | | | | |
| | | | | | | | | | | | | | | | | |
| ss | | Ezequiel Tovar | 81 | 81 | 716.2 | 85 | 236 | 3 | 30 | 324 | .991 | | | | | |
| | | Oneil Cruz | 28 | 28 | 242.0 | 35 | 86 | 4 | 10 | 125 | .968 | | | | | |
| | f | Marcelo Mayer | 35 | 26 | 248.1 | 30 | 84 | 2 | 5 | 116 | .983 | | | | | |
| | | Total | 144 | 135 | 1207.0 | 150 | 406 | 9 | 45 | 565 | .984 | | | | | |
| | | | | | | | | | | | | | | | | |
| lf | f | Evan Carter | 72 | 71 | 635.1 | 128 | 5 | 1 | 1 | 134 | .993 | | | | | |
| | | Mark Vientos | 64 | 64 | 563.1 | 103 | 4 | 0 | 0 | 107 | 1.000 | | | | | |
| | | Zac Veen | 1 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | .000 | | | | | |
| | | Other | 5 | 0 | 7.1 | 3 | 0 | 0 | 0 | 3 | 1.000 | | | | | |
| | | Total | 142 | 135 | 1207.0 | 234 | 9 | 1 | 1 | 244 | .996 | | | | | |
| | | | | | | | | | | | | | | | | |
| cf | | Oneil Cruz | 98 | 98 | 880.0 | 202 | 3 | 10 | 0 | 215 | .953 | | | | | |
| | | Corbin Carroll | 11 | 11 | 98.0 | 17 | 1 | 0 | 0 | 18 | 1.000 | | | | | |
| | | Zac Veen | 2 | 0 | 3.0 | 0 | 0 | 0 | 0 | 0 | .000 | | | | | |
| | | Other | 26 | 26 | 226.0 | 46 | 5 | 0 | 0 | 51 | 1.000 | | | | | |
| | | Total | 137 | 135 | 1207.0 | 265 | 9 | 10 | 0 | 284 | .965 | | | | | |
| | | | | | | | | | | | | | | | | |
| rf | | Corbin Carroll | 114 | 114 | 1020.0 | 179 | 4 | 0 | 0 | 183 | 1.000 | | | | | |
| | | Other | 22 | 21 | 187.0 | 40 | 1 | 0 | 0 | 41 | 1.000 | | | | | |
| | | Total | 136 | 135 | 1207.0 | 219 | 5 | 0 | 0 | 224 | 1.000 | | | | | |
| | | | | | | | | | | | | | | | | |
| | | Total | 135 | 135 | 1207.0 | 3621 | 1275 | 81 | 67 | 4977 | .984 | 26 | | | | |
