| 2011 NL Leaders | |||||||||||||||||
| Name | Age | Team | G | W | L | IP | TBF | H | 2B | 3B | HR | R | ER | BB | SO | ERA | RA9 |
| Bronson Arroyo | 34 | Cincinnati | 32 | 9 | 12 | 199.0 | 855 | 227 | 47 | 3 | 46 | 119 | 112 | 45 | 108 | 5.07 | 5.38 |
| Ricky Nolasco | 29 | Florida | 33 | 10 | 12 | 206.0 | 891 | 244 | 50 | 5 | 20 | 117 | 107 | 44 | 148 | 4.67 | 5.11 |
| Brett Myers | 31 | Houston | 34 | 7 | 14 | 216.0 | 917 | 226 | 42 | 4 | 31 | 116 | 107 | 57 | 160 | 4.46 | 4.83 |
| Mike Pelfrey | 28 | NY Mets | 34 | 7 | 13 | 193.2 | 860 | 220 | 37 | 7 | 21 | 111 | 102 | 65 | 105 | 4.74 | 5.16 |
| Ryan Dempster | 34 | Chi Cubs | 34 | 10 | 14 | 202.1 | 881 | 211 | 51 | 8 | 23 | 111 | 108 | 82 | 191 | 4.80 | 4.94 |
| Derek Lowe | 38 | Atlanta | 34 | 9 | 17 | 187.0 | 830 | 212 | 38 | 5 | 14 | 110 | 105 | 70 | 137 | 5.05 | 5.29 |
| Jake Westbrook | 34 | St. Louis | 33 | 12 | 9 | 183.1 | 809 | 208 | 40 | 8 | 16 | 103 | 95 | 73 | 104 | 4.66 | 5.06 |
| J.A. Happ | 29 | Houston | 28 | 6 | 15 | 156.1 | 698 | 157 | 40 | 4 | 21 | 103 | 93 | 83 | 134 | 5.35 | 5.93 |
| Jason Hammel | 29 | Colorado | 32 | 7 | 13 | 170.1 | 739 | 175 | 32 | 6 | 21 | 100 | 90 | 68 | 94 | 4.76 | 5.28 |
| Jaime Garcia | 25 | St. Louis | 32 | 13 | 7 | 194.2 | 826 | 207 | 37 | 5 | 15 | 100 | 77 | 50 | 156 | 3.56 | 4.62 |
| Chris Capuano | 33 | NY Mets | 33 | 11 | 12 | 186.0 | 802 | 198 | 51 | 3 | 27 | 99 | 94 | 53 | 168 | 4.55 | 4.79 |
| Chris Carpenter | 36 | St. Louis | 34 | 11 | 9 | 237.1 | 996 | 243 | 33 | 4 | 16 | 98 | 91 | 55 | 191 | 3.45 | 3.72 |
| Chad Billingsley | 27 | LA Dodgers | 32 | 11 | 11 | 188.0 | 829 | 188 | 41 | 2 | 14 | 98 | 88 | 84 | 152 | 4.21 | 4.69 |
| Livan Hernandez | 36 | Washington | 29 | 8 | 13 | 175.1 | 751 | 199 | 34 | 8 | 16 | 98 | 87 | 46 | 99 | 4.47 | 5.03 |
| Daniel Hudson | 24 | Arizona | 33 | 16 | 12 | 222.0 | 921 | 217 | 53 | 7 | 17 | 98 | 86 | 50 | 169 | 3.49 | 3.97 |
| Christopher Volstad | 25 | Florida | 29 | 5 | 13 | 165.2 | 719 | 187 | 40 | 2 | 23 | 96 | 92 | 49 | 117 | 5.00 | 5.22 |
| Randy Wolf | 35 | Milwaukee | 33 | 13 | 10 | 212.1 | 903 | 214 | 45 | 3 | 23 | 95 | 87 | 66 | 134 | 3.69 | 4.03 |
| Joe Saunders | 30 | Arizona | 33 | 12 | 13 | 212.0 | 874 | 211 | 35 | 7 | 29 | 94 | 89 | 67 | 108 | 3.78 | 3.99 |
| Bud Norris | 26 | Houston | 31 | 6 | 11 | 186.0 | 795 | 178 | 38 | 2 | 24 | 93 | 81 | 70 | 176 | 3.92 | 4.50 |
| Yovani Gallardo | 25 | Milwaukee | 33 | 17 | 10 | 207.1 | 865 | 193 | 27 | 3 | 27 | 92 | 81 | 59 | 207 | 3.52 | 3.99 |
| Javier Vazquez | 35 | Florida | 32 | 13 | 11 | 192.2 | 798 | 179 | 39 | 6 | 21 | 91 | 82 | 50 | 162 | 3.83 | 4.25 |
| Matt Garza | 28 | Chi Cubs | 31 | 10 | 10 | 198.0 | 839 | 186 | 32 | 3 | 14 | 90 | 73 | 63 | 197 | 3.32 | 4.09 |
| John Lannan | 27 | Washington | 33 | 10 | 13 | 184.2 | 808 | 194 | 35 | 2 | 15 | 90 | 76 | 76 | 106 | 3.70 | 4.39 |
| Kevin Correia | 31 | Pittsburgh | 27 | 12 | 11 | 154.0 | 660 | 175 | 28 | 3 | 24 | 90 | 83 | 39 | 77 | 4.85 | 5.26 |
| Jonathon Niese | 25 | NY Mets | 27 | 11 | 11 | 157.1 | 694 | 178 | 35 | 4 | 14 | 88 | 77 | 44 | 138 | 4.40 | 5.03 |
| Ted Lilly | 36 | LA Dodgers | 33 | 12 | 14 | 192.2 | 800 | 172 | 39 | 2 | 28 | 88 | 85 | 51 | 158 | 3.97 | 4.11 |
| Jhoulys Chacin | 24 | Colorado | 31 | 11 | 14 | 194.0 | 827 | 168 | 39 | 9 | 20 | 87 | 78 | 87 | 150 | 3.62 | 4.04 |
| James McDonald | 27 | Pittsburgh | 31 | 9 | 9 | 171.0 | 754 | 176 | 33 | 1 | 24 | 86 | 80 | 78 | 142 | 4.21 | 4.53 |
| Tim Hudson | 36 | Atlanta | 33 | 16 | 10 | 215.0 | 884 | 189 | 30 | 2 | 14 | 86 | 77 | 56 | 158 | 3.22 | 3.60 |
| R.A. Dickey | 37 | NY Mets | 33 | 8 | 13 | 208.2 | 876 | 203 | 39 | 4 | 18 | 85 | 78 | 54 | 134 | 3.36 | 3.67 |
