| 2012 NL Leaders | |||||||||||||
| Name | Age | Team | G | IP | TBF | BB% | K% | BABIP | LOB% | GB% | HR/Air | ERA | FIP |
| Ryan Dempster | 35 | Chi Cubs | 16 | 104.00 | 417 | 6.5% | 19.9% | .241 | 84% | 43% | 5% | 2.25 | 3.46 |
| Travis Wood | 25 | Chi Cubs | 26 | 156.00 | 649 | 8.3% | 18.3% | .252 | 72% | 37% | 9% | 4.27 | 4.88 |
| Kristopher Medlen | 27 | Atlanta | 50 | 138.00 | 520 | 4.4% | 23.1% | .262 | 85% | 55% | 4% | 1.57 | 2.45 |
| Mike Minor | Atlanta | 30 | 179.33 | 728 | 7.7% | 19.9% | .263 | 71% | 37% | 8% | 4.12 | 4.42 | |
| Matt Cain | 28 | San Francisco | 32 | 219.33 | 876 | 5.8% | 22.0% | .269 | 79% | 40% | 6% | 2.79 | 3.43 |
| Ross Detwiler | 26 | Washington | 33 | 164.33 | 686 | 7.6% | 15.3% | .269 | 71% | 51% | 6% | 3.40 | 4.08 |
| Kyle Lohse | 34 | St. Louis | 33 | 211.00 | 864 | 4.4% | 16.6% | .270 | 77% | 41% | 5% | 2.86 | 3.54 |
| Clayton Kershaw | 24 | LA Dodgers | 33 | 227.67 | 901 | 7.0% | 25.4% | .275 | 78% | 47% | 5% | 2.53 | 2.93 |
| Matthew Latos | 25 | Cincinnati | 33 | 209.33 | 858 | 7.5% | 21.6% | .275 | 75% | 46% | 8% | 3.48 | 3.89 |
| Matt Garza | 29 | Chi Cubs | 18 | 103.67 | 424 | 7.5% | 22.6% | .275 | 74% | 50% | 10% | 3.91 | 4.20 |
| Eric Stults | 33 | San Diego | 18 | 92.33 | 383 | 6.0% | 13.3% | .275 | 74% | 39% | 4% | 3.22 | 3.79 |
| Gio Gonzalez | 27 | Washington | 32 | 199.33 | 822 | 9.2% | 25.2% | .276 | 74% | 49% | 3% | 2.89 | 2.86 |
| Clayton Richard | 29 | San Diego | 33 | 218.67 | 910 | 4.6% | 11.8% | .276 | 71% | 54% | 9% | 3.99 | 4.65 |
| James McDonald | 28 | Pittsburgh | 30 | 171.00 | 713 | 9.7% | 21.2% | .278 | 71% | 40% | 7% | 4.21 | 4.24 |
| Tim Hudson | 37 | Atlanta | 28 | 179.00 | 749 | 6.4% | 13.6% | .279 | 71% | 54% | 4% | 3.62 | 3.81 |
| Jonathon Niese | 26 | NY Mets | 30 | 190.33 | 788 | 6.2% | 19.7% | .279 | 76% | 49% | 7% | 3.40 | 3.84 |
| Madison Bumgarner | 23 | San Francisco | 32 | 208.33 | 849 | 5.8% | 22.5% | .282 | 73% | 48% | 7% | 3.37 | 3.54 |
| R.A. Dickey | 38 | NY Mets | 34 | 233.67 | 927 | 5.8% | 24.8% | .284 | 80% | 47% | 7% | 2.73 | 3.30 |
| Kevin Correia | 32 | Pittsburgh | 32 | 171.00 | 728 | 6.3% | 12.2% | .285 | 69% | 51% | 7% | 4.21 | 4.47 |
| Kyle Kendrick | 28 | Philadelphia | 37 | 159.33 | 674 | 7.3% | 17.2% | .287 | 74% | 46% | 7% | 3.90 | 4.36 |
| Anthony Bass | San Diego | 24 | 97.00 | 411 | 9.5% | 19.5% | .288 | 61% | 50% | 7% | 4.73 | 4.06 | |
| Shaun Marcum | 31 | Milwaukee | 21 | 124.00 | 527 | 7.8% | 20.7% | .288 | 75% | 36% | 7% | 3.70 | 4.14 |
| Paul Maholm | 30 | Chi Cubs | 21 | 120.33 | 503 | 6.8% | 16.1% | .290 | 76% | 50% | 6% | 3.74 | 4.17 |
| Edwin Jackson | 29 | Washington | 31 | 189.67 | 790 | 7.3% | 21.3% | .290 | 71% | 47% | 8% | 4.03 | 3.88 |
| Aaron Harang | 34 | LA Dodgers | 31 | 179.67 | 786 | 10.8% | 16.7% | .292 | 72% | 39% | 4% | 3.76 | 4.17 |
| Barry Zito | 34 | San Francisco | 32 | 184.33 | 799 | 8.8% | 14.3% | .292 | 73% | 42% | 6% | 4.15 | 4.52 |
| Bronson Arroyo | 35 | Cincinnati | 32 | 202.00 | 835 | 4.2% | 15.4% | .292 | 77% | 43% | 7% | 3.74 | 4.12 |
| Chris Capuano | 34 | LA Dodgers | 33 | 198.33 | 817 | 6.6% | 19.8% | .293 | 73% | 41% | 7% | 3.63 | 3.98 |
| Ryan Vogelsong | 35 | San Francisco | 31 | 189.67 | 788 | 7.9% | 20.1% | .293 | 76% | 43% | 5% | 3.37 | 3.73 |
| Wandy Rodriguez | 34 | Houston | 21 | 130.67 | 558 | 5.7% | 15.9% | .293 | 68% | 51% | 6% | 3.79 | 3.84 |
