| MLB Pitching Leaders - 2009 - Earned Run Average | |||||||||||||||
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| 1 | Zack Greinke | 5 | 33 | 33 | 6 | 3 | 229.1 | 195 | 55 | 51 | 242 | 16 | 8 | 0 | 2.16 |
| 2 | Chris Carpenter | 11 | 28 | 28 | 3 | 1 | 192.2 | 156 | 48 | 38 | 144 | 17 | 4 | 0 | 2.24 |
| 3 | Tim Lincecum | 2 | 32 | 32 | 4 | 2 | 225.1 | 168 | 62 | 68 | 261 | 15 | 7 | 0 | 2.48 |
| 4 | Felix Hernandez | 4 | 34 | 34 | 2 | 1 | 238.2 | 200 | 66 | 71 | 217 | 19 | 5 | 0 | 2.49 |
| 5 | Jair Jurrjens | 2 | 34 | 34 | 0 | 0 | 215.0 | 186 | 62 | 75 | 152 | 14 | 10 | 0 | 2.60 |
| 6 | Adam Wainwright | 4 | 34 | 34 | 1 | 0 | 233.0 | 216 | 68 | 66 | 212 | 19 | 8 | 0 | 2.63 |
| 7 | Roy Halladay | 11 | 32 | 32 | 9 | 4 | 239.0 | 234 | 74 | 35 | 208 | 17 | 10 | 0 | 2.79 |
| 8 | Clayton Kershaw | 1 | 31 | 30 | 0 | 0 | 171.0 | 119 | 53 | 91 | 185 | 8 | 8 | 0 | 2.79 |
| 9 | Javier Vazquez | 11 | 32 | 32 | 3 | 0 | 219.1 | 181 | 70 | 44 | 238 | 15 | 10 | 0 | 2.87 |
| 10 | Matt Cain | 4 | 33 | 33 | 4 | 0 | 217.2 | 184 | 70 | 73 | 171 | 14 | 8 | 0 | 2.89 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| 11 | J.A. Happ | 2 | 35 | 23 | 3 | 2 | 166.0 | 149 | 54 | 56 | 119 | 12 | 4 | 0 | 2.93 |
| 12 | Wandy Rodriguez | 4 | 33 | 33 | 1 | 1 | 205.2 | 192 | 69 | 63 | 193 | 14 | 12 | 0 | 3.02 |
| 13 | Randy Wells | 1 | 27 | 27 | 0 | 0 | 165.1 | 165 | 56 | 46 | 104 | 12 | 10 | 0 | 3.05 |
| 14 | Ted Lilly | 10 | 27 | 27 | 0 | 0 | 177.0 | 151 | 61 | 36 | 151 | 12 | 9 | 0 | 3.10 |
| 15 | Johan Santana | 9 | 25 | 25 | 0 | 0 | 166.2 | 156 | 58 | 46 | 146 | 13 | 9 | 0 | 3.13 |
| 16 | Dan Haren | 6 | 33 | 33 | 3 | 1 | 229.1 | 192 | 80 | 38 | 223 | 14 | 10 | 0 | 3.14 |
| 17 | Cliff Lee | 7 | 34 | 34 | 6 | 2 | 231.2 | 245 | 83 | 43 | 181 | 14 | 13 | 0 | 3.22 |
| 18 | Josh Johnson | 4 | 33 | 33 | 2 | 0 | 209.0 | 184 | 75 | 58 | 191 | 15 | 5 | 0 | 3.23 |
| 19 | Randy Wolf | 10 | 34 | 34 | 0 | 0 | 214.1 | 178 | 77 | 58 | 160 | 11 | 7 | 0 | 3.23 |
| 20 | CC Sabathia | 8 | 34 | 34 | 2 | 1 | 230.0 | 197 | 86 | 67 | 197 | 19 | 8 | 0 | 3.37 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| 21 | Jon Lester | 3 | 32 | 32 | 2 | 0 | 203.1 | 186 | 77 | 64 | 225 | 15 | 8 | 0 | 3.41 |
| 22 | Justin Verlander | 4 | 35 | 35 | 3 | 1 | 240.0 | 219 | 92 | 63 | 269 | 19 | 9 | 0 | 3.45 |
| 23 | Ubaldo Jimenez | 3 | 33 | 33 | 1 | 0 | 218.0 | 183 | 84 | 85 | 198 | 15 | 12 | 0 | 3.47 |
| 24 | Joel Pineiro | 9 | 32 | 32 | 3 | 2 | 214.0 | 218 | 83 | 27 | 105 | 15 | 12 | 0 | 3.49 |
| 25 | Edwin Jackson | 6 | 33 | 33 | 1 | 0 | 214.0 | 200 | 86 | 70 | 161 | 13 | 9 | 0 | 3.62 |
| 26 | Ryan Dempster | 11 | 31 | 31 | 1 | 1 | 200.0 | 196 | 81 | 65 | 172 | 11 | 9 | 0 | 3.65 |
| 27 | Kevin Millwood | 12 | 31 | 31 | 3 | 0 | 198.2 | 195 | 81 | 71 | 123 | 13 | 10 | 0 | 3.67 |
| 28 | Yovani Gallardo | 2 | 30 | 30 | 1 | 0 | 185.2 | 150 | 77 | 94 | 204 | 13 | 12 | 0 | 3.73 |
| 29 | Jered Weaver | 3 | 33 | 33 | 4 | 2 | 211.0 | 196 | 88 | 66 | 174 | 16 | 8 | 0 | 3.75 |
| 30 | Carlos Zambrano | 8 | 28 | 28 | 1 | 1 | 169.1 | 155 | 71 | 78 | 152 | 9 | 7 | 0 | 3.77 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| 31 | John Danks | 2 | 32 | 32 | 1 | 0 | 200.1 | 184 | 84 | 73 | 149 | 13 | 11 | 0 | 3.77 |
| 32 | Jarrod Washburn | 11 | 28 | 28 | 1 | 1 | 176.0 | 160 | 74 | 49 | 100 | 9 | 9 | 0 | 3.78 |
| 33 | John Lackey | 7 | 27 | 27 | 1 | 1 | 176.1 | 177 | 75 | 47 | 139 | 11 | 8 | 0 | 3.83 |
| 34 | Mark Buehrle | 9 | 33 | 33 | 1 | 1 | 213.1 | 222 | 91 | 45 | 105 | 13 | 10 | 0 | 3.84 |
| 35 | Bronson Arroyo | 9 | 33 | 33 | 3 | 2 | 220.1 | 214 | 94 | 65 | 127 | 15 | 13 | 0 | 3.84 |
| 36 | Josh Beckett | 8 | 32 | 32 | 4 | 2 | 212.1 | 198 | 91 | 55 | 199 | 17 | 6 | 0 | 3.86 |
| 37 | Kenshin Kawakami | 0 | 32 | 25 | 0 | 0 | 156.1 | 153 | 67 | 57 | 105 | 7 | 12 | 1 | 3.86 |
| 38 | John Lannan | 2 | 33 | 33 | 2 | 1 | 206.1 | 210 | 89 | 68 | 89 | 9 | 13 | 0 | 3.88 |
| 39 | Kevin Correia | 6 | 33 | 33 | 1 | 1 | 198.0 | 194 | 86 | 64 | 142 | 12 | 11 | 0 | 3.91 |
| 40 | Ross Ohlendorf | 2 | 29 | 29 | 0 | 0 | 176.2 | 165 | 77 | 53 | 109 | 11 | 10 | 0 | 3.92 |
| PLAYER | YRS | G | GS | CG | SH | IP | H | ER | BB | SO | W | L | SV | ERA | |
| 41 | Jeff Niemann | 1 | 31 | 30 | 2 | 2 | 180.2 | 185 | 79 | 59 | 125 | 13 | 6 | 0 | 3.94 |
| 42 | Matt Garza | 3 | 32 | 32 | 0 | 0 | 203.0 | 177 | 89 | 79 | 189 | 8 | 12 | 0 | 3.95 |
| 43 | Rick Porcello | 1 | 31 | 31 | 0 | 0 | 170.2 | 176 | 75 | 52 | 89 | 14 | 9 | 0 | 3.96 |
| 44 | Jon Garland | 9 | 33 | 33 | 1 | 0 | 204.0 | 225 | 91 | 61 | 109 | 11 | 13 | 0 | 4.01 |
| 45 | Nick Blackburn | 2 | 33 | 33 | 3 | 0 | 205.2 | 240 | 92 | 41 | 98 | 11 | 11 | 0 | 4.03 |
| 46 | Barry Zito | 9 | 33 | 33 | 1 | 0 | 192.0 | 179 | 86 | 81 | 154 | 10 | 13 | 0 | 4.03 |
| 47 | Chad Billingsley | 3 | 33 | 32 | 0 | 0 | 196.1 | 173 | 88 | 86 | 179 | 12 | 11 | 0 | 4.03 |
| 48 | Jason Marquis | 9 | 33 | 33 | 2 | 1 | 216.0 | 218 | 97 | 80 | 115 | 15 | 13 | 0 | 4.04 |
| 49 | A.J. Burnett | 10 | 33 | 33 | 1 | 0 | 207.0 | 193 | 93 | 97 | 195 | 13 | 9 | 0 | 4.04 |
| 50 | Joe Blanton | 5 | 31 | 31 | 0 | 0 | 195.1 | 198 | 88 | 59 | 163 | 12 | 8 | 0 | 4.05 |