| SP | Glasnow, T.Glasnow, Tyler >> | 29 | 2023 | R | 94 | 19 | 19 | 5 | 5 | 4.92 | .321 | 1.39 | 9.1 | 3.4 | 10.8 | 106.0 | 107 | 60 | 58 | 16 | 40 | 127 | 0 | 0 | 0 | 0 | 7 | 3 | 5 | 3.78 |
| SP | Wheeler, Z.Wheeler, Zack # >> | 33 | 2023 | R | 88 | 18 | 18 | 5 | 4 | 4.31 | .286 | 1.17 | 8.3 | 2.2 | 10.6 | 110.2 | 102 | 56 | 53 | 14 | 27 | 129 | 0 | 0 | 0 | 0 | 10 | 4 | 4 | 3.15 |
| SP | Wacha, M.Wacha, Michael >> | 31 | 2023 | R | 69 | 17 | 17 | 2 | 7 | 6.24 | .336 | 1.47 | 9.6 | 3.7 | 9.2 | 92.1 | 98 | 64 | 64 | 18 | 38 | 94 | 0 | 0 | 0 | 0 | 4 | 4 | 0 | 4.87 |
| SP | Canning, G.Canning, Griffin >> | 27 | 2023 | R | 54 | 17 | 17 | 4 | 6 | 7.33 | .381 | 1.77 | 11.8 | 4.2 | 11.5 | 77.1 | 101 | 64 | 63 | 14 | 36 | 98 | 0 | 0 | 0 | 0 | 0 | 6 | 3 | 4.45 |
| SP | Oviedo, J.Oviedo, Johan >> | 25 | 2023 | R | 41 | 17 | 17 | 6 | 6 | 4.72 | .324 | 1.38 | 8.2 | 4.3 | 8.5 | 97.1 | 88 | 52 | 51 | 5 | 46 | 92 | 0 | 0 | 0 | 0 | 8 | 6 | 3 | 3.38 |
| RP | Kimbrel, C.Kimbrel, Craig >> | 35 | 2023 | R | 92 | 47 | 0 | 5 | 1 | 4.06 | .320 | 1.35 | 7.9 | 4.4 | 11.7 | 64.1 | 56 | 29 | 29 | 10 | 31 | 83 | 0 | 0 | 5 | 0 | 0 | 4 | 8 | 4.08 |
| RP | Wilson, B.Wilson, Bryse >> | 25 | 2023 | R | 67 | 51 | 0 | 1 | 4 | 4.02 | .296 | 1.26 | 8.9 | 2.5 | 8.0 | 78.1 | 77 | 36 | 35 | 13 | 22 | 69 | 0 | 4 | 4 | 0 | 0 | 0 | 4 | 4.24 |
| RP | Rogers, T.Rogers, Taylor >> | 32 | 2023 | L | 50 | 45 | 0 | 5 | 4 | 4.02 | .329 | 1.45 | 7.3 | 5.9 | 10.5 | 53.2 | 43 | 28 | 24 | 4 | 35 | 62 | 0 | 2 | 0 | 0 | 0 | 1 | 3 | 3.68 |
| RP | Stanek, R.Stanek, Ryne >> | 31 | 2023 | R | 38 | 46 | 0 | 4 | 4 | 6.61 | .384 | 1.78 | 11.3 | 5.0 | 10.5 | 47.2 | 59 | 36 | 35 | 7 | 26 | 55 | 0 | 5 | 3 | 0 | 0 | 4 | 3 | 4.51 |
| SP | Kopech, M.Kopech, Michael >> | 27 | 2023 | R | 32 | 14 | 0 | 2 | 0 | 4.56 | .364 | 1.68 | 8.3 | 7.2 | 10.8 | 25.2 | 23 | 13 | 13 | 4 | 20 | 30 | 0 | 3 | 0 | 0 | 0 | 1 | 3 | 5.20 |