Luis Tiant was 122-81 with an ERA of 3.36, 1,075 strikeouts and 3 saves in 274 appearances for the Red Sox in his career.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | L. Tiant | 1971 |  BOS | 21 | 1 | 7 | .125 | 10 | 4.85 | 59 | 1 | 0 | 0 | 72.1 | 73 | 39 | 42 | 8 | 32 | 1 | 4 | 1 | 321 | 4 | 7.34 | 3.98 | 1.84 | 1.00 | 18.4 | 10.0 | 1.45 | .294 | 5.23 | 132 | 3.62 | 96 | 9.08 | 1.3 |
| 2 | | L. Tiant | 1972 | BOS | 43 | 15 | 6 | .714 | 19 | 1.91 | 123 | 12 | 6 | 3 | 179.0 | 128 | 38 | 45 | 7 | 65 | 0 | 12 | 5 | 713 | 0 | 6.18 | 3.27 | 1.89 | 0.35 | 17.3 | 9.1 | 1.08 | .234 | 2.26 | 59 | 2.62 | 77 | 6.44 | 14.9 |
| 3 | | L. Tiant | 1973 | BOS | 35 | 20 | 13 | .606 | 35 | 3.34 | 206 | 23 | 0 | 0 | 272.0 | 217 | 101 | 105 | 32 | 78 | 7 | 0 | 3 | 1,096 | 2 | 6.82 | 2.58 | 2.64 | 1.06 | 18.8 | 7.1 | 1.08 | .239 | 3.47 | 83 | 3.51 | 87 | 7.18 | 15.6 |
| 4 | | L. Tiant | 1974 | BOS | 38 | 22 | 13 | .629 | 38 | 2.92 | 176 | 25 | 7 | 0 | 311.1 | 281 | 101 | 106 | 21 | 82 | 4 | 0 | 3 | 1,266 | 1 | 5.09 | 2.37 | 2.15 | 0.61 | 13.9 | 6.5 | 1.17 | .264 | 3.06 | 75 | 3.14 | 83 | 8.12 | 21.4 |
| 5 | | L. Tiant | 1975 |  BOS | 35 | 18 | 14 | .563 | 35 | 4.02 | 142 | 18 | 2 | 0 | 260.0 | 262 | 116 | 126 | 25 | 72 | 4 | 0 | 0 | 1,080 | 2 | 4.92 | 2.49 | 1.97 | 0.87 | 13.1 | 6.7 | 1.28 | .283 | 4.36 | 98 | 3.61 | 91 | 9.07 | 10.3 |
| 6 | | L. Tiant | 1976 | BOS | 38 | 21 | 12 | .636 | 38 | 3.06 | 131 | 19 | 3 | 0 | 279.0 | 274 | 95 | 107 | 25 | 64 | 3 | 0 | 2 | 1,136 | 1 | 4.23 | 2.06 | 2.05 | 0.81 | 11.5 | 5.6 | 1.21 | .273 | 3.45 | 80 | 3.57 | 97 | 8.84 | 3.6 |
| 7 | | L. Tiant | 1977 | BOS | 32 | 12 | 8 | .600 | 32 | 4.53 | 124 | 3 | 3 | 0 | 188.2 | 210 | 95 | 98 | 26 | 51 | 2 | 0 | 3 | 814 | 0 | 5.92 | 2.43 | 2.43 | 1.24 | 15.2 | 6.3 | 1.38 | .301 | 4.67 | 102 | 4.05 | 96 | 10.02 | 3.9 |
| 8 | | L. Tiant | 1978 | BOS | 32 | 13 | 8 | .619 | 31 | 3.31 | 114 | 12 | 5 | 0 | 212.1 | 185 | 78 | 80 | 26 | 57 | 5 | 1 | 4 | 863 | 0 | 4.83 | 2.42 | 2.00 | 1.10 | 13.2 | 6.6 | 1.14 | .241 | 3.39 | 82 | 3.97 | 101 | 7.84 | -0.9 |
| Total | 274 | 122 | 81 | .601 | 238 | 3.36 | 1,075 | 113 | 26 | 3 | 1774.2 | 1,630 | 663 | 709 | 170 | 501 | 26 | 17 | 21 | 7,289 | 10 | 5.45 | 2.54 | 2.15 | 0.86 | 14.7 | 6.9 | 1.20 | .265 | 3.60 | 85 | 3.50 | 91 | 8.27 | 70.1 |
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