| C(3B) | Vazquez, C.Vazquez, Christian >> | 27 | 2018 | R | 7 | 2 | 73 | 80 | .207 | .257 | .283 | .540 | .200 | 251 | 24 | 52 | 10 | 0 | 3 | 16 | 13 | 41 | 4 | 4 | .996 | - | +0.2 | 3 | 8 | 5 | C |
| C(OF) | Swihart, B.Swihart, Blake >> | 26 | 2018 | S | 6 | 4 | 50 | 82 | .229 | .285 | .328 | .613 | .220 | 192 | 28 | 44 | 10 | 0 | 3 | 18 | 15 | 57 | 0 | 6 | .996 | - | -0.4 | 4 | 10 | 5 | C |
| 1B(OF) | Pearce, S.Pearce, Steven >> | 35 | 2018 | R | 58 | 61 | 34 | 76 | .284 | .382 | .512 | .894 | .320 | 215 | 35 | 61 | 14 | 1 | 11 | 42 | 29 | 41 | 5 | 0 | .995 | - | -1 | 2 | 12 | 5 | C |
| 2B(IF) | Pedroia, D.Pedroia, Dustin >> | 25 | 2008 | R | 87 | 74 | 97 | 157 | .326 | .380 | .493 | .873 | .320 | 653 | 118 | 213 | 54 | 2 | 17 | 83 | 50 | 52 | 7 | 20 | .992 | - | +1.81 | 5 | 9 | 34 | C |
| 3B(IF) | Devers, R.Devers, Rafael >> | 21 | 2018 | L | 3 | 11 | 5 | 121 | .240 | .299 | .433 | .732 | .240 | 450 | 59 | 108 | 24 | 0 | 21 | 66 | 38 | 121 | 0 | 5 | .926 | - | -0.9 | 2 | 12 | 6 | C |
| SS(IF) | Bogaerts, X.Bogaerts, Xander >> | 25 | 2018 | R | 43 | 56 | 14 | 136 | .288 | .364 | .522 | .886 | .300 | 513 | 72 | 148 | 45 | 3 | 23 | 103 | 55 | 102 | 6 | 8 | .980 | - | -1 | 4 | 11 | 8 | C |
| OF(OF) | Bradley, J.Bradley, Jackie >> | 28 | 2018 | L | 13 | 12 | 56 | 144 | .234 | .316 | .403 | .719 | .260 | 474 | 76 | 111 | 33 | 4 | 13 | 59 | 46 | 137 | 11 | 17 | .982 | - | +0.4 | 6 | 10 | 11 | C |
| OF(2B) | Betts, M.Betts, Mookie >> | 25 | 2018 | R | 100 | 99 | 99 | 136 | .346 | .442 | .640 | 1.082 | .380 | 520 | 129 | 180 | 47 | 5 | 32 | 80 | 81 | 91 | 8 | 30 | .996 | - | +1.8 | 7 | 13 | 8 | C |
| OF(OF) | Benintendi, A.Benintendi, Andrew >> | 24 | 2018 | L | 45 | 51 | 25 | 148 | .290 | .370 | .465 | .835 | .310 | 579 | 103 | 168 | 41 | 6 | 16 | 87 | 71 | 106 | 2 | 21 | .984 | - | -0.6 | 6 | 10 | 14 | C |
| OF(OF) | Martinez, J.Martinez, J.D. >> | 30 | 2018 | R | 88 | 94 | 31 | 150 | .330 | .407 | .629 | 1.036 | .350 | 569 | 111 | 188 | 37 | 2 | 43 | 130 | 69 | 146 | 4 | 6 | 1.000 | - | -1.4 | 3 | 15 | 16 | C |