Team fielding - 2003 Seattle Mariners
Regular season
| Primary |
| Pos | Name | G | GS | INN | PO | A | E | DP | TC | PCT | PB | SB | CS | SB% | PK |
| p | Baldwin, J | 36 | 26 | 192.2 | 10 | 20 | 0 | 2 | 30 | 1.000 | | 22 | 5 | .815 | 2 |
| | Anderson, J* | 34 | 28 | 180.0 | 9 | 20 | 0 | 0 | 29 | 1.000 | | 23 | 7 | .767 | 0 |
| | Dempster, R | 35 | 35 | 212.1 | 8 | 20 | 0 | 1 | 28 | 1.000 | | 18 | 8 | .692 | 3 |
| | Sturtze, T | 33 | 33 | 226.0 | 9 | 13 | 1 | 1 | 23 | .957 | | 14 | 2 | .875 | 0 |
| | Roberts, G | 46 | 0 | 94.1 | 4 | 14 | 1 | 0 | 19 | .947 | | 7 | 1 | .875 | 1 |
| | Perez, O* | 24 | 18 | 121.2 | 8 | 5 | 1 | 1 | 14 | .929 | | 4 | 1 | .800 | 0 |
| | Colome, J | 45 | 0 | 83.2 | 3 | 6 | 0 | 1 | 9 | 1.000 | | 12 | 3 | .800 | 0 |
| | Lewis, C | 19 | 7 | 57.0 | 2 | 7 | 0 | 0 | 9 | 1.000 | | 6 | 2 | .750 | 0 |
| | Stephenson, G | 13 | 9 | 57.2 | 3 | 5 | 0 | 1 | 8 | 1.000 | | 5 | 1 | .833 | 0 |
| | Day, Z | 18 | 0 | 30.0 | 5 | 3 | 0 | 0 | 8 | 1.000 | | 3 | 1 | .750 | 0 |
| | Sullivan, S | 41 | 0 | 55.2 | 2 | 3 | 2 | 0 | 7 | .714 | | 0 | 3 | .000 | 0 |
| | Manzanillo, J | 18 | 0 | 22.0 | 4 | 1 | 0 | 0 | 5 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | de los Santos, L | 6 | 6 | 33.2 | 0 | 2 | 1 | 0 | 3 | .667 | | 3 | 1 | .750 | 0 |
| | Aybar, M | 12 | 0 | 14.1 | 1 | 1 | 0 | 0 | 2 | 1.000 | | 2 | 1 | .667 | 0 |
| | Beltran, F | 16 | 0 | 23.2 | 0 | 2 | 0 | 0 | 2 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | Wise, M | 4 | 0 | 6.2 | 0 | 0 | 0 | 0 | 0 | .000 | | 0 | 0 | .000 | 0 |
| | Nunez, J* | 5 | 0 | 4.1 | 0 | 0 | 0 | 0 | 0 | .000 | | 1 | 0 | 1.000 | 0 |
| | Total | 405 | 162 | 1415.2 | 68 | 122 | 6 | 7 | 196 | .969 | | 122 | 36 | .772 | 6 |
| | | | | | | | | | | | | | | | |
| c | Alomar, S | 95 | 95 | 843.0 | 631 | 39 | 5 | 2 | 675 | .993 | 6 | 70 | 25 | .737 | 0 |
| | Osik, K | 60 | 60 | 494.1 | 348 | 20 | 5 | 0 | 373 | .987 | 11 | 38 | 11 | .776 | 0 |
| | Rivera, M | 7 | 7 | 59.1 | 40 | 1 | 0 | 0 | 41 | 1.000 | 3 | 4 | 0 | 1.000 | 0 |
| | Cash, K | 4 | 0 | 19.0 | 16 | 0 | 0 | 0 | 16 | 1.000 | 0 | 10 | 0 | 1.000 | 0 |
| | Total | 166 | 162 | 1415.2 | 1035 | 60 | 10 | 2 | 1105 | .991 | 20 | 122 | 36 | .772 | 0 |
| | | | | | | | | | | | | | | | |
| 1b | Clark, T# | 96 | 96 | 868.1 | 747 | 50 | 12 | 75 | 809 | .985 | | | | | |
| | Fullmer, B* | 59 | 59 | 480.1 | 421 | 19 | 8 | 47 | 448 | .982 | | | | | |
| | Sweeney, M* | 12 | 7 | 67.0 | 58 | 5 | 1 | 8 | 64 | .984 | | | | | |
| | Total | 167 | 162 | 1415.2 | 1226 | 74 | 21 | 130 | 1321 | .984 | | | | | |
| | | | | | | | | | | | | | | | |
| 2b | Jackson, D | 92 | 91 | 837.1 | 202 | 272 | 8 | 58 | 482 | .983 | | | | | |
| | Sadler, D | 59 | 58 | 474.0 | 106 | 151 | 5 | 39 | 262 | .981 | | | | | |
| | Phillips, B | 10 | 10 | 80.0 | 20 | 30 | 0 | 5 | 50 | 1.000 | | | | | |
| | Mateo, H# | 3 | 3 | 24.1 | 5 | 6 | 0 | 3 | 11 | 1.000 | | | | | |
| | Total | 164 | 162 | 1415.2 | 333 | 459 | 13 | 105 | 805 | .984 | | | | | |
| | | | | | | | | | | | | | | | |
| 3b | Beltre, A | 159 | 159 | 1383.1 | 122 | 261 | 28 | 32 | 411 | .932 | | | | | |
| | Sadler, D | 5 | 3 | 32.1 | 4 | 7 | 0 | 0 | 11 | 1.000 | | | | | |
| | Total | 164 | 162 | 1415.2 | 126 | 268 | 28 | 32 | 422 | .934 | | | | | |
| | | | | | | | | | | | | | | | |
| ss | Gonzalez, A | 142 | 142 | 1244.0 | 205 | 407 | 41 | 80 | 653 | .937 | | | | | |
| | Mateo, H# | 20 | 20 | 166.2 | 27 | 59 | 1 | 13 | 87 | .989 | | | | | |
| | Sadler, D | 2 | 0 | 5.0 | 1 | 2 | 0 | 1 | 3 | 1.000 | | | | | |
| | Total | 164 | 162 | 1415.2 | 233 | 468 | 42 | 94 | 743 | .943 | | | | | |
| | | | | | | | | | | | | | | | |
| lf | Griffey, K* | 75 | 75 | 687.0 | 174 | 20 | 7 | 1 | 201 | .965 | | | | | |
| | Cruz, J# | 46 | 46 | 380.0 | 118 | 5 | 0 | 1 | 123 | 1.000 | | | | | |
| | Sadler, D | 21 | 20 | 167.1 | 51 | 0 | 0 | 0 | 51 | 1.000 | | | | | |
| | Werth, J | 17 | 17 | 140.1 | 34 | 0 | 0 | 0 | 34 | 1.000 | | | | | |
| | Sweeney, M* | 6 | 4 | 41.0 | 16 | 0 | 0 | 0 | 16 | 1.000 | | | | | |
| | Total | 165 | 162 | 1415.2 | 393 | 25 | 7 | 2 | 425 | .984 | | | | | |
| | | | | | | | | | | | | | | | |
| cf | Cruz, J# | 86 | 86 | 775.1 | 241 | 13 | 1 | 0 | 255 | .996 | | | | | |
| | Rivera, R | 76 | 76 | 635.1 | 222 | 9 | 2 | 2 | 233 | .991 | | | | | |
| | Griffey, K* | 1 | 0 | 5.0 | 1 | 0 | 0 | 0 | 1 | 1.000 | | | | | |
| | Total | 163 | 162 | 1415.2 | 464 | 22 | 3 | 2 | 489 | .994 | | | | | |
| | | | | | | | | | | | | | | | |
| rf | Guiel, A* | 74 | 74 | 683.0 | 183 | 10 | 15 | 1 | 208 | .928 | | | | | |
| | Cuddyer, M | 49 | 49 | 404.2 | 114 | 4 | 3 | 0 | 121 | .975 | | | | | |
| | Sweeney, M* | 23 | 23 | 183.2 | 43 | 2 | 0 | 0 | 45 | 1.000 | | | | | |
| | Mateo, R | 9 | 9 | 72.1 | 16 | 1 | 0 | 0 | 17 | 1.000 | | | | | |
| | Sadler, D | 8 | 7 | 68.0 | 12 | 0 | 0 | 0 | 12 | 1.000 | | | | | |
| | Griffey, K* | 1 | 0 | 4.0 | 1 | 0 | 0 | 0 | 1 | 1.000 | | | | | |
| | Total | 164 | 162 | 1415.2 | 369 | 17 | 18 | 1 | 404 | .955 | | | | | |
| | | | | | | | | | | | | | | | |
| | Total | 162 | 162 | 1415.2 | 4247 | 1515 | 148 | 138 | 5910 | .975 | 20 | | | | |