| SP | Buehler, W.Buehler, Walker # >> | 23 | 2018 | R | 90 | 34 | 34 | 6 | 11 | 4.12 | .304 | 1.29 | 8.7 | 2.9 | 10.4 | 205.1 | 199 | 99 | 94 | 34 | 65 | 236 | 0 | 0 | 0 | 0 | 14 | 5 | 3 | 3.88 |
| SP | Syndergaard, N.Syndergaard, Noah >> | 22 | 2015 | R | 58 | 33 | 33 | 9 | 18 | 6.34 | .344 | 1.56 | 10.8 | 3.2 | 9.9 | 190.1 | 229 | 134 | 134 | 37 | 68 | 209 | 0 | 0 | 0 | 0 | 10 | 3 | 4 | 4.45 |
| SP | Morton, C.Morton, Charlie # >> | 36 | 2019 | R | 56 | 32 | 32 | 8 | 13 | 5.28 | .325 | 1.42 | 9.4 | 3.4 | 9.6 | 179.0 | 187 | 105 | 105 | 38 | 68 | 191 | 0 | 0 | 0 | 0 | 15 | 3 | 5 | 4.82 |
| SP | Paxton, J.Paxton, James >> | 29 | 2018 | L | 46 | 30 | 30 | 9 | 16 | 7.07 | .351 | 1.59 | 11.0 | 3.4 | 10.4 | 152.2 | 185 | 120 | 120 | 34 | 57 | 175 | 0 | 0 | 0 | 0 | 8 | 6 | 7 | 4.85 |
| SP | Halladay, R.Halladay, Roy >> | 33 | 2010 | R | 43 | 30 | 30 | 9 | 16 | 6.11 | .348 | 1.54 | 12.2 | 1.7 | 6.3 | 188.2 | 254 | 132 | 128 | 37 | 36 | 132 | 5 | 0 | 0 | 1 | 10 | 12 | 1 | 4.92 |
| RP | Sanchez, A.Sanchez, Aaron >> | 21 | 2014 | R | 90 | 88 | 0 | 4 | 4 | 3.12 | .303 | 1.26 | 7.1 | 4.3 | 8.2 | 132.2 | 104 | 48 | 46 | 13 | 63 | 120 | 0 | 7 | 3 | 0 | 0 | 6 | 5 | 4.03 |
| RP | Ottavino, A.Ottavino, Adam >> | 32 | 2018 | R | 61 | 82 | 0 | 2 | 5 | 5.00 | .336 | 1.46 | 7.5 | 5.8 | 12.3 | 93.2 | 77 | 53 | 52 | 15 | 60 | 127 | 0 | 6 | 3 | 0 | 0 | 5 | 8 | 4.46 |
| RP | Marmol, C.Marmol, Carlos >> | 28 | 2010 | R | 42 | 79 | 0 | 2 | 5 | 3.67 | .307 | 1.28 | 5.9 | 5.7 | 11.5 | 100.2 | 66 | 41 | 41 | 7 | 63 | 128 | 0 | 5 | 2 | 0 | 0 | 5 | 2 | 3.39 |
| RP | Rodriguez, F.Rodriguez, Francisco >> | 32 | 2014 | R | 29 | 73 | 0 | 6 | 3 | 5.19 | .341 | 1.51 | 9.5 | 4.2 | 8.7 | 78.0 | 82 | 45 | 45 | 14 | 36 | 75 | 0 | 3 | 3 | 0 | 0 | 3 | 0 | 4.91 |
| SP | Romero, R.Romero, Ricky >> | 26 | 2011 | L | 38 | 10 | 3 | 2 | 2 | 6.54 | .336 | 1.52 | 10.5 | 3.5 | 9.0 | 31.2 | 36 | 23 | 23 | 10 | 12 | 31 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 6.35 |