| C(1B) | Moeller, C.Moeller, Chad >> | 28 | 2003 | R | 40 | 39 | 67 | 78 | .268 | .337 | .435 | .772 | .300 | 239 | 29 | 64 | 17 | 1 | 7 | 29 | 23 | 59 | 2 | 1 | .987 | - | +0.41 | 2 | +0.82 | 5 | C |
| C(1B) | Molina, B.Molina, Bengie >> | 29 | 2003 | R | 37 | 31 | 92 | 119 | .281 | .307 | .443 | .750 | .270 | 409 | 37 | 115 | 24 | 0 | 14 | 71 | 13 | 31 | 2 | 1 | .993 | + | +0.92 | 2 | +1.46 | 6 | C |
| 1B(3B) | Teixeira, M.Teixeira, Mark >> | 23 | 2003 | S | 44 | 41 | 80 | 146 | .259 | .332 | .480 | .812 | .290 | 529 | 66 | 137 | 29 | 5 | 26 | 84 | 44 | 120 | 14 | 1 | .989 | - | +0.75 | 3 | +1.2 | 12 | C |
| 2B(IF) | Boone, B.Boone, Bret # >> | 34 | 2003 | R | 84 | 81 | 62 | 159 | .294 | .370 | .535 | .905 | .330 | 622 | 111 | 183 | 35 | 5 | 35 | 117 | 68 | 125 | 7 | 16 | .990 | - | +0.04 | 5 | +6.3 | 56 | C |
| SS(IF) | Garciaparra, N.Garciaparra, Nomar >> | 30 | 2003 | R | 75 | 74 | 73 | 156 | .301 | .350 | .524 | .874 | .310 | 658 | 120 | 198 | 37 | 13 | 28 | 105 | 39 | 61 | 11 | 19 | .971 | - | +1.42 | 7 | +5.53 | 29 | C |
| DH(OF) | Young, D.Young, Dmitri $ >> | 30 | 2003 | S | 68 | 86 | 1 | 155 | .297 | .374 | .537 | .911 | .340 | 562 | 78 | 167 | 34 | 7 | 29 | 85 | 58 | 130 | 11 | 2 | .947 | - | -2.13 | 4 | +4.65 | 25 | C |
| OF(DH) | Walker, L.Walker, Larry >> | 37 | 2003 | L | 91 | 86 | 66 | 143 | .284 | .423 | .476 | .899 | .380 | 454 | 86 | 129 | 25 | 7 | 16 | 79 | 98 | 87 | 11 | 7 | .983 | - | +0.43 | 5 | +3.39 | 11 | C |
| OF(DH) | Beltran, C.Beltran, Carlos $$ >> | 26 | 2003 | S | 94 | 91 | 65 | 141 | .307 | .393 | .522 | .915 | .360 | 521 | 102 | 160 | 14 | 10 | 26 | 100 | 72 | 81 | 2 | 41 | .987 | - | +0.25 | 8 | +5.81 | 10 | C |
| OF(OF) | Berkman, L.Berkman, Lance $$ >> | 27 | 2003 | S | 92 | 89 | 53 | 153 | .288 | .414 | .515 | .929 | .380 | 538 | 110 | 155 | 35 | 6 | 25 | 93 | 107 | 108 | 9 | 5 | .989 | - | -0.1 | 4 | +4.64 | 20 | C |