| MLB Pitching Leaders - 1984 - Earned Runs Allowed | |||||||||||||||
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| 1 | Jim Clancy | 15 | 36 | 36 | 5 | 0 | 219.2 | 249 | 125 | 88 | 118 | 13 | 15 | 0 | 5.12 |
| 2 | Floyd Bannister | 15 | 34 | 33 | 4 | 0 | 218.0 | 211 | 117 | 80 | 152 | 14 | 11 | 0 | 4.83 |
| LaMarr Hoyt | 8 | 34 | 34 | 11 | 1 | 235.2 | 244 | 117 | 43 | 126 | 13 | 18 | 0 | 4.47 | |
| Mike Moore | 14 | 34 | 33 | 6 | 0 | 212.0 | 236 | 117 | 85 | 158 | 7 | 17 | 0 | 4.97 | |
| 5 | Neal Heaton | 12 | 38 | 34 | 4 | 1 | 198.2 | 231 | 115 | 75 | 75 | 12 | 15 | 0 | 5.21 |
| 6 | Charlie Hough | 25 | 36 | 36 | 17 | 1 | 266.0 | 260 | 111 | 94 | 164 | 16 | 14 | 0 | 3.76 |
| 7 | Mark W. Davis | 15 | 46 | 27 | 1 | 0 | 174.2 | 201 | 104 | 54 | 124 | 5 | 17 | 0 | 5.36 |
| Tom Seaver | 20 | 34 | 33 | 10 | 4 | 236.2 | 216 | 104 | 61 | 131 | 15 | 11 | 0 | 3.95 | |
| 9 | Mike Smithson | 8 | 36 | 36 | 10 | 1 | 252.0 | 246 | 103 | 54 | 144 | 15 | 13 | 0 | 3.68 |
| 10 | Mike Krukow | 14 | 35 | 33 | 3 | 1 | 199.1 | 234 | 101 | 78 | 141 | 11 | 12 | 1 | 4.56 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| Dave Stewart | 16 | 32 | 27 | 3 | 0 | 192.1 | 193 | 101 | 87 | 119 | 7 | 14 | 0 | 4.73 | |
| 12 | Lary Sorensen | 11 | 46 | 21 | 2 | 0 | 183.1 | 240 | 100 | 44 | 63 | 6 | 13 | 1 | 4.91 |
| Bill Laskey | 6 | 35 | 34 | 2 | 0 | 207.2 | 222 | 100 | 50 | 71 | 9 | 14 | 0 | 4.33 | |
| 14 | Rick Sutcliffe | 18 | 35 | 35 | 9 | 3 | 244.2 | 234 | 99 | 85 | 213 | 20 | 6 | 0 | 3.64 |
| 15 | Danny Darwin | 21 | 35 | 32 | 5 | 1 | 223.2 | 249 | 98 | 54 | 123 | 8 | 12 | 0 | 3.94 |
| Rich Dotson | 12 | 32 | 32 | 14 | 1 | 245.2 | 216 | 98 | 103 | 120 | 14 | 15 | 0 | 3.59 | |
| Ron Guidry | 14 | 29 | 28 | 5 | 1 | 195.2 | 223 | 98 | 44 | 127 | 10 | 11 | 0 | 4.51 | |
| 18 | Joaquin Andujar | 13 | 36 | 36 | 12 | 4 | 261.1 | 218 | 97 | 70 | 147 | 20 | 14 | 0 | 3.34 |
| Larry Gura | 16 | 31 | 25 | 3 | 0 | 168.2 | 175 | 97 | 67 | 68 | 12 | 9 | 0 | 5.18 | |
| 20 | Luis Leal | 6 | 35 | 35 | 6 | 2 | 222.1 | 221 | 96 | 77 | 134 | 13 | 8 | 0 | 3.89 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| Jack Morris | 18 | 35 | 35 | 9 | 1 | 240.1 | 221 | 96 | 87 | 148 | 19 | 11 | 0 | 3.60 | |
| Bob Ojeda | 15 | 33 | 32 | 8 | 5 | 216.2 | 211 | 96 | 96 | 137 | 12 | 12 | 0 | 3.99 | |
| Oil Can Boyd | 10 | 29 | 26 | 10 | 3 | 197.2 | 207 | 96 | 53 | 134 | 12 | 12 | 0 | 4.37 | |
| Ron Romanick | 3 | 33 | 33 | 8 | 2 | 229.2 | 240 | 96 | 61 | 87 | 12 | 12 | 0 | 3.76 | |
| 25 | Bruce Hurst | 15 | 33 | 33 | 9 | 2 | 218.0 | 232 | 95 | 88 | 136 | 12 | 12 | 0 | 3.92 |
| Steve McCatty | 9 | 33 | 30 | 4 | 0 | 179.2 | 206 | 95 | 71 | 63 | 8 | 14 | 0 | 4.76 | |
| Mike Witt | 13 | 34 | 34 | 9 | 2 | 246.2 | 227 | 95 | 84 | 196 | 15 | 11 | 0 | 3.47 | |
| 28 | Mario Soto | 12 | 33 | 33 | 13 | 0 | 237.1 | 181 | 93 | 87 | 185 | 18 | 7 | 0 | 3.53 |
| 29 | Frank Viola | 15 | 35 | 35 | 10 | 4 | 257.2 | 225 | 92 | 73 | 149 | 18 | 12 | 0 | 3.21 |
| 30 | Steve Carlton | 24 | 33 | 33 | 1 | 0 | 229.0 | 214 | 91 | 79 | 163 | 13 | 7 | 0 | 3.58 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| Bill Gullickson | 14 | 32 | 32 | 3 | 0 | 226.2 | 230 | 91 | 37 | 100 | 12 | 9 | 0 | 3.61 | |
| Doyle Alexander | 19 | 36 | 35 | 11 | 2 | 261.2 | 238 | 91 | 59 | 139 | 17 | 6 | 0 | 3.13 | |
| Tommy John | 26 | 32 | 29 | 4 | 1 | 181.1 | 223 | 91 | 56 | 47 | 7 | 13 | 0 | 4.52 | |
| 34 | Dennis Eckersley | 24 | 33 | 33 | 4 | 0 | 225.0 | 223 | 90 | 49 | 114 | 14 | 12 | 0 | 3.60 |
| Jim Slaton | 16 | 32 | 22 | 5 | 1 | 163.0 | 192 | 90 | 56 | 67 | 7 | 10 | 0 | 4.97 | |
| 36 | Don Sutton | 23 | 33 | 33 | 1 | 0 | 212.2 | 224 | 89 | 51 | 143 | 14 | 12 | 0 | 3.77 |
| Mike Flanagan | 18 | 34 | 34 | 10 | 2 | 226.2 | 213 | 89 | 81 | 115 | 13 | 13 | 0 | 3.53 | |
| Frank Tanana | 21 | 35 | 35 | 9 | 1 | 246.1 | 234 | 89 | 81 | 141 | 15 | 15 | 0 | 3.25 | |
| Bud Black | 15 | 35 | 35 | 8 | 1 | 257.0 | 226 | 89 | 64 | 140 | 17 | 12 | 0 | 3.12 | |
| 40 | Pascual Perez | 11 | 30 | 30 | 4 | 1 | 211.2 | 208 | 88 | 51 | 145 | 14 | 8 | 0 | 3.74 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| Fernando Valenzuela | 17 | 34 | 34 | 12 | 2 | 261.0 | 218 | 88 | 106 | 240 | 12 | 17 | 0 | 3.03 | |
| Craig McMurtry | 9 | 37 | 30 | 0 | 0 | 183.1 | 184 | 88 | 102 | 99 | 9 | 17 | 0 | 4.32 | |
| 43 | Ron Darling | 13 | 33 | 33 | 2 | 2 | 205.2 | 179 | 87 | 104 | 136 | 12 | 9 | 0 | 3.81 |
| Jeff Robinson | 9 | 34 | 33 | 1 | 1 | 171.2 | 195 | 87 | 52 | 102 | 7 | 15 | 0 | 4.56 | |
| 45 | John Butcher | 7 | 34 | 34 | 8 | 1 | 225.0 | 242 | 86 | 53 | 83 | 13 | 11 | 0 | 3.44 |
| Scott McGregor | 13 | 30 | 30 | 10 | 3 | 196.1 | 216 | 86 | 54 | 67 | 15 | 12 | 0 | 3.94 | |
| Milt Wilcox | 16 | 33 | 33 | 0 | 0 | 193.2 | 183 | 86 | 66 | 119 | 17 | 8 | 0 | 4.00 | |
| Jeff Russell | 14 | 33 | 30 | 4 | 2 | 181.2 | 186 | 86 | 65 | 101 | 6 | 18 | 0 | 4.26 | |
| 49 | Dave LaPoint | 12 | 33 | 33 | 2 | 1 | 193.0 | 205 | 85 | 77 | 130 | 12 | 10 | 0 | 3.96 |
| Tim Lollar | 7 | 31 | 31 | 3 | 2 | 195.2 | 168 | 85 | 105 | 131 | 11 | 13 | 0 | 3.91 | |