| SP | Cole, G.Cole, Gerrit # >> | 28 | 2019 | R | 96 | 25 | 25 | 14 | 8 | 3.08 | .259 | 1.03 | 7.4 | 1.9 | 9.9 | 178.0 | 147 | 64 | 61 | 25 | 37 | 196 | 2 | 0 | 0 | 0 | 18 | 3 | 0 | 3.30 |
| SP | Arrieta, J.Arrieta, Jake >> | 29 | 2015 | R | 95 | 24 | 24 | 12 | 10 | 3.64 | .311 | 1.33 | 9.1 | 2.9 | 7.9 | 168.0 | 169 | 69 | 68 | 19 | 54 | 147 | 3 | 0 | 0 | 0 | 17 | 4 | 6 | 3.76 |
| SP | Rogers, S.Rogers, Steve >> | 24 | 1973 | R | 50 | 24 | 24 | 11 | 10 | 4.80 | .339 | 1.50 | 9.4 | 4.1 | 5.3 | 159.1 | 166 | 88 | 85 | 26 | 73 | 93 | 0 | 0 | 0 | 0 | 13 | 6 | 2 | 5.45 |
| SP | Lincecum, T.Lincecum, Tim >> | 25 | 2009 | R | 59 | 23 | 23 | 6 | 14 | 4.79 | .331 | 1.47 | 9.6 | 3.6 | 9.5 | 154.0 | 165 | 88 | 82 | 16 | 62 | 163 | 1 | 0 | 0 | 1 | 11 | 2 | 7 | 3.48 |
| CL | Hader, J.Hader, Josh † >> | 24 | 2018 | L | 92 | 42 | 0 | 1 | 0 | 2.74 | .269 | 1.05 | 6.0 | 3.6 | 11.6 | 42.2 | 28 | 15 | 13 | 5 | 17 | 54 | 0 | 30 | 4 | 0 | 0 | 2 | 0 | 3.33 |
| RP | Feliz, N.Feliz, Neftali >> | 21 | 2009 | R | 97 | 55 | 0 | 2 | 4 | 2.67 | .262 | 1.06 | 6.0 | 3.5 | 8.6 | 64.0 | 43 | 19 | 19 | 4 | 25 | 61 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 3.08 |
| RP | Jackson, M.Jackson, Mike >> | 30 | 1994 | R | 82 | 44 | 0 | 1 | 4 | 4.26 | .303 | 1.30 | 7.7 | 4.1 | 9.7 | 50.2 | 43 | 24 | 24 | 7 | 23 | 54 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 4.04 |
| RP | Lidge, B.Lidge, Brad # >> | 28 | 2004 | R | 62 | 31 | 0 | 1 | 0 | 5.45 | .369 | 1.73 | 10.9 | 4.6 | 9.8 | 33.0 | 40 | 20 | 20 | 7 | 17 | 36 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 5.21 |