Team fielding - 2020 Seattle Mariners
Regular season
| Primary |
| Pos | Name | G | GS | INN | PO | A | E | DP | TC | PCT | PB | SB | CS | SB% | PK |
| p | Minor, M | 33 | 33 | 213.1 | 6 | 20 | 0 | 2 | 26 | 1.000 | | 9 | 3 | .750 | 1 |
| | Urquidy, J | 13 | 7 | 67.0 | 7 | 12 | 0 | 1 | 19 | 1.000 | | 1 | 3 | .250 | 0 |
| | Wisler, M | 49 | 8 | 89.1 | 8 | 9 | 0 | 1 | 17 | 1.000 | | 3 | 1 | .750 | 1 |
| | Fedde, E | 18 | 18 | 110.2 | 2 | 14 | 0 | 1 | 16 | 1.000 | | 3 | 0 | 1.000 | 0 |
| | Castro, M | 58 | 0 | 80.0 | 6 | 8 | 1 | 1 | 15 | .933 | | 4 | 1 | .800 | 1 |
| | Harvey, M | 15 | 15 | 70.2 | 3 | 9 | 1 | 0 | 13 | .923 | | 1 | 0 | 1.000 | 0 |
| | Velazquez, H | 22 | 16 | 90.2 | 5 | 6 | 2 | 1 | 13 | .846 | | 2 | 0 | 1.000 | 0 |
| | Margevicius, N* | 17 | 16 | 80.1 | 5 | 8 | 0 | 0 | 13 | 1.000 | | 7 | 1 | .875 | 0 |
| | LeBlanc, W* | 15 | 15 | 85.1 | 4 | 7 | 1 | 0 | 12 | .917 | | 1 | 0 | 1.000 | 0 |
| | Shoemaker, M | 6 | 6 | 41.0 | 4 | 7 | 1 | 0 | 12 | .917 | | 1 | 1 | .500 | 0 |
| | Rodriguez, R | 60 | 0 | 67.1 | 6 | 5 | 0 | 1 | 11 | 1.000 | | 5 | 1 | .833 | 0 |
| | Glasnow, T* | 15 | 15 | 91.2 | 4 | 5 | 0 | 0 | 9 | 1.000 | | 9 | 0 | 1.000 | 0 |
| | Blevins, J* | 49 | 0 | 41.2 | 3 | 5 | 0 | 0 | 8 | 1.000 | | 2 | 1 | .667 | 1 |
| | Kahnle, T | 59 | 0 | 64.1 | 2 | 5 | 0 | 1 | 7 | 1.000 | | 1 | 2 | .333 | 0 |
| | Littell, Z | 31 | 0 | 39.1 | 3 | 4 | 0 | 0 | 7 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | Guerrero, T | 44 | 0 | 54.2 | 4 | 2 | 0 | 0 | 6 | 1.000 | | 1 | 0 | 1.000 | 0 |
| | Stewart, K | 12 | 3 | 46.0 | 4 | 2 | 0 | 0 | 6 | 1.000 | | 3 | 2 | .600 | 0 |
| | Sipp, T* | 41 | 0 | 37.1 | 1 | 4 | 0 | 0 | 5 | 1.000 | | 1 | 1 | .500 | 0 |
| | Wright, K | 8 | 5 | 29.2 | 1 | 2 | 0 | 0 | 3 | 1.000 | | 3 | 1 | .750 | 0 |
| | Duplantier, J* | 5 | 5 | 20.1 | 1 | 1 | 0 | 1 | 2 | 1.000 | | 0 | 0 | .000 | 0 |
| | O'Day, D | 8 | 0 | 7.0 | 1 | 0 | 0 | 0 | 1 | 1.000 | | 0 | 0 | .000 | 0 |
| | Total | 578 | 162 | 1427.2 | 80 | 135 | 6 | 10 | 221 | .973 | | 58 | 18 | .763 | 4 |
| | | | | | | | | | | | | | | | |
| c | Alfaro, J | 139 | 139 | 1233.0 | 1162 | 34 | 11 | 4 | 1207 | .991 | 14 | 41 | 15 | .732 | 1 |
| | Farmer, K | 24 | 23 | 194.2 | 175 | 4 | 2 | 0 | 181 | .989 | 3 | 17 | 3 | .850 | 0 |
| | Total | 163 | 162 | 1427.2 | 1337 | 38 | 13 | 4 | 1388 | .991 | 17 | 58 | 18 | .763 | 1 |
| | | | | | | | | | | | | | | | |
| 1b | Alonso, P | 161 | 161 | 1407.2 | 1318 | 82 | 10 | 147 | 1410 | .993 | | | | | |
| | Cabrera, M | 2 | 1 | 9.0 | 9 | 1 | 0 | 2 | 10 | 1.000 | | | | | |
| | Dietrich, D* | 1 | 0 | 5.0 | 3 | 1 | 0 | 1 | 4 | 1.000 | | | | | |
| | Culberson, C | 1 | 0 | 6.0 | 3 | 0 | 0 | 0 | 3 | 1.000 | | | | | |
| | Total | 165 | 162 | 1427.2 | 1333 | 84 | 10 | 150 | 1427 | .993 | | | | | |
| | | | | | | | | | | | | | | | |
| 2b | Dietrich, D* | 85 | 75 | 677.0 | 140 | 263 | 3 | 71 | 406 | .993 | | | | | |
| | Farmer, K | 42 | 39 | 339.2 | 68 | 113 | 4 | 28 | 185 | .978 | | | | | |
| | LeMahieu, D | 33 | 29 | 245.1 | 45 | 90 | 3 | 23 | 138 | .978 | | | | | |
| | Solak, N | 12 | 12 | 101.0 | 17 | 28 | 1 | 7 | 46 | .978 | | | | | |
| | Reyes, P | 10 | 7 | 64.2 | 11 | 23 | 0 | 8 | 34 | 1.000 | | | | | |
| | Total | 182 | 162 | 1427.2 | 281 | 517 | 11 | 137 | 809 | .986 | | | | | |
| | | | | | | | | | | | | | | | |
| 3b | LeMahieu, D | 117 | 116 | 1029.0 | 64 | 212 | 5 | 28 | 281 | .982 | | | | | |
| | Solak, N | 24 | 24 | 200.1 | 19 | 43 | 1 | 2 | 63 | .984 | | | | | |
| | Farmer, K | 14 | 10 | 93.0 | 7 | 19 | 2 | 1 | 28 | .929 | | | | | |
| | Arroyo, C | 12 | 12 | 100.2 | 8 | 17 | 3 | 2 | 28 | .893 | | | | | |
| | Happ, I# | 2 | 0 | 4.2 | 0 | 1 | 0 | 0 | 1 | 1.000 | | | | | |
| | Total | 169 | 162 | 1427.2 | 98 | 292 | 11 | 33 | 401 | .973 | | | | | |
| | | | | | | | | | | | | | | | |
| ss | Russell, A | 87 | 85 | 764.2 | 106 | 274 | 25 | 57 | 405 | .938 | | | | | |
| | Culberson, C | 68 | 59 | 506.0 | 72 | 192 | 4 | 39 | 268 | .985 | | | | | |
| | Reyes, P | 20 | 18 | 157.0 | 17 | 45 | 5 | 7 | 67 | .925 | | | | | |
| | Total | 175 | 162 | 1427.2 | 195 | 511 | 34 | 103 | 740 | .954 | | | | | |
| | | | | | | | | | | | | | | | |
| lf | Cabrera, M# | 124 | 124 | 1046.1 | 205 | 10 | 2 | 0 | 217 | .991 | | | | | |
| | Dietrich, D* | 31 | 31 | 260.0 | 41 | 2 | 0 | 0 | 43 | 1.000 | | | | | |
| | Reyes, P | 7 | 3 | 36.1 | 14 | 0 | 0 | 0 | 14 | 1.000 | | | | | |
| | Culberson, C | 33 | 4 | 73.0 | 12 | 0 | 0 | 0 | 12 | 1.000 | | | | | |
| | Shuck, J* | 7 | 0 | 9.0 | 4 | 0 | 0 | 0 | 4 | 1.000 | | | | | |
| | Granderson, C* | 1 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 1.000 | | | | | |
| | Happ, I# | 1 | 0 | 2.0 | 0 | 0 | 0 | 0 | 0 | .000 | | | | | |
| | Total | 204 | 162 | 1427.2 | 277 | 12 | 2 | 0 | 291 | .993 | | | | | |
| | | | | | | | | | | | | | | | |
| cf | Engel, A | 77 | 72 | 630.2 | 189 | 5 | 7 | 0 | 201 | .965 | | | | | |
| | Happ, I# | 60 | 57 | 491.0 | 119 | 6 | 1 | 1 | 126 | .992 | | | | | |
| | Shuck, J* | 16 | 16 | 138.0 | 35 | 2 | 0 | 0 | 37 | 1.000 | | | | | |
| | Martin, J* | 21 | 17 | 157.0 | 32 | 3 | 0 | 0 | 35 | 1.000 | | | | | |
| | Reyes, P | 8 | 0 | 11.0 | 2 | 0 | 0 | 0 | 2 | 1.000 | | | | | |
| | Total | 182 | 162 | 1427.2 | 377 | 16 | 8 | 1 | 401 | .980 | | | | | |
| | | | | | | | | | | | | | | | |
| rf | Granderson, C* | 77 | 75 | 656.0 | 145 | 4 | 0 | 0 | 149 | 1.000 | | | | | |
| | Dickerson, A* | 73 | 71 | 631.1 | 135 | 3 | 0 | 0 | 138 | 1.000 | | | | | |
| | Cabrera, M# | 12 | 12 | 101.2 | 17 | 1 | 0 | 0 | 18 | 1.000 | | | | | |
| | Reyes, P | 7 | 3 | 27.2 | 5 | 0 | 0 | 0 | 5 | 1.000 | | | | | |
| | Happ, I# | 2 | 1 | 10.0 | 3 | 0 | 0 | 0 | 3 | 1.000 | | | | | |
| | Engel, A | 1 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | .000 | | | | | |
| | Total | 172 | 162 | 1427.2 | 305 | 8 | 0 | 0 | 313 | 1.000 | | | | | |
| | | | | | | | | | | | | | | | |
| | Total | 162 | 162 | 1427.2 | 4283 | 1613 | 95 | 158 | 5991 | .984 | 17 | | | | |