| 2012 NL Leaders | |||||||||||||
| Name | Age | Team | G | IP | TBF | BB% | K% | BABIP | LOB% | GB% | HR/Air | ERA | FIP |
| Stephen Strasburg | Washington | 28 | 159.33 | 653 | 7.4% | 30.2% | .320 | 75% | 43% | 7% | 3.16 | 2.86 | |
| Marco Estrada | 29 | Milwaukee | 29 | 138.33 | 562 | 5.2% | 25.4% | .307 | 72% | 35% | 7% | 3.64 | 3.38 |
| Clayton Kershaw | 24 | LA Dodgers | 33 | 227.67 | 901 | 7.0% | 25.4% | .275 | 78% | 47% | 5% | 2.53 | 2.93 |
| Gio Gonzalez | 27 | Washington | 32 | 199.33 | 822 | 9.2% | 25.2% | .276 | 74% | 49% | 3% | 2.89 | 2.86 |
| Michael Fiers | Milwaukee | 23 | 127.67 | 539 | 6.7% | 25.0% | .325 | 73% | 34% | 5% | 3.74 | 3.13 | |
| Cole Hamels | 29 | Philadelphia | 31 | 215.33 | 867 | 6.0% | 24.9% | .298 | 78% | 44% | 7% | 3.09 | 3.34 |
| Jeff Samardzija | 28 | Chi Cubs | 28 | 174.67 | 723 | 7.7% | 24.9% | .303 | 73% | 45% | 8% | 3.81 | 3.59 |
| R.A. Dickey | 38 | NY Mets | 34 | 233.67 | 927 | 5.8% | 24.8% | .284 | 80% | 47% | 7% | 2.73 | 3.30 |
| Cliff Lee | 34 | Philadelphia | 30 | 211.00 | 847 | 3.3% | 24.4% | .313 | 79% | 46% | 8% | 3.16 | 3.17 |
| Zack Greinke | 29 | Milwaukee | 21 | 123.00 | 504 | 5.6% | 24.2% | .328 | 72% | 54% | 4% | 3.44 | 2.57 |
| Lance Lynn | 25 | St. Louis | 35 | 176.00 | 744 | 8.6% | 24.2% | .328 | 76% | 46% | 6% | 3.78 | 3.53 |
| Yovani Gallardo | 26 | Milwaukee | 33 | 204.00 | 860 | 9.4% | 23.7% | .301 | 78% | 47% | 9% | 3.66 | 3.98 |
| Kristopher Medlen | 27 | Atlanta | 50 | 138.00 | 520 | 4.4% | 23.1% | .262 | 85% | 55% | 4% | 1.57 | 2.45 |
| Tim Lincecum | 28 | San Francisco | 33 | 186.00 | 825 | 10.9% | 23.0% | .321 | 68% | 45% | 8% | 5.18 | 4.21 |
| Matt Garza | 29 | Chi Cubs | 18 | 103.67 | 424 | 7.5% | 22.6% | .275 | 74% | 50% | 10% | 3.91 | 4.20 |
| Bud Norris | 27 | Houston | 29 | 168.33 | 733 | 9.0% | 22.5% | .308 | 72% | 39% | 8% | 4.71 | 4.26 |
| Madison Bumgarner | 23 | San Francisco | 32 | 208.33 | 849 | 5.8% | 22.5% | .282 | 73% | 48% | 7% | 3.37 | 3.54 |
| Johan Santana | 33 | NY Mets | 21 | 117.00 | 499 | 7.8% | 22.2% | .308 | 69% | 35% | 8% | 4.85 | 4.12 |
| Adam Wainwright | 31 | St. Louis | 32 | 198.67 | 831 | 6.3% | 22.1% | .325 | 68% | 51% | 5% | 3.94 | 3.13 |
| Matt Cain | 28 | San Francisco | 32 | 219.33 | 876 | 5.8% | 22.0% | .269 | 79% | 40% | 6% | 2.79 | 3.43 |
| Edinson Volquez | 29 | San Diego | 32 | 182.67 | 802 | 13.1% | 21.7% | .301 | 73% | 51% | 6% | 4.09 | 4.09 |
| Matthew Latos | 25 | Cincinnati | 33 | 209.33 | 858 | 7.5% | 21.6% | .275 | 75% | 46% | 8% | 3.48 | 3.89 |
| J.A. Happ | 30 | Houston | 18 | 104.33 | 457 | 8.5% | 21.4% | .324 | 73% | 46% | 10% | 4.83 | 4.52 |
| Joshua Collmenter | Arizona | 28 | 90.33 | 375 | 5.9% | 21.3% | .312 | 78% | 40% | 8% | 3.69 | 3.96 | |
| Edwin Jackson | 29 | Washington | 31 | 189.67 | 790 | 7.3% | 21.3% | .290 | 71% | 47% | 8% | 4.03 | 3.88 |
| James McDonald | 28 | Pittsburgh | 30 | 171.00 | 713 | 9.7% | 21.2% | .278 | 71% | 40% | 7% | 4.21 | 4.24 |
| Erik Bedard | 33 | Pittsburgh | 24 | 125.67 | 557 | 10.1% | 21.2% | .322 | 67% | 45% | 7% | 5.01 | 4.11 |
| Thomas Hanson | 26 | Atlanta | 31 | 174.67 | 761 | 9.3% | 21.2% | .324 | 74% | 40% | 9% | 4.48 | 4.60 |
| A.J. Burnett | 36 | Pittsburgh | 31 | 202.33 | 851 | 7.3% | 21.2% | .301 | 74% | 58% | 7% | 3.51 | 3.56 |
| Dillon Gee | NY Mets | 17 | 109.67 | 463 | 6.3% | 21.0% | .305 | 69% | 52% | 8% | 4.10 | 3.74 | |
