| 2012 NL Leaders | |||||||||||||||||||
| Name | Age | Pos | Team | PA | AB | R | H | 2B | 3B | HR | RBI | BB | SO | SB | CS | AVG | OBP | SLG | OPS |
| Jason Marquis | 34 | P | San Diego | 36 | 32 | 3 | 9 | 3 | 0 | 0 | 1 | 0 | 12 | 0 | 1 | 0.281 | 0.278 | 0.375 | 653 |
| Collin McHugh | NY Mets | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 | ||
| Micah Owings | 30 | LF | San Diego | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 |
| Rex Brothers | Colorado | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 | ||
| Wandy Rodriguez | 34 | P | Pittsburgh | 27 | 24 | 1 | 4 | 0 | 0 | 0 | 1 | 0 | 5 | 0 | 0 | 0.167 | 0.148 | 0.167 | 315 |
| Guillermo Moscoso | 29 | P | Colorado | 12 | 11 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | 5 | 0 | 0 | 0.182 | 0.167 | 0.273 | 440 |
| Aaron Harang | 34 | P | LA Dodgers | 63 | 56 | 1 | 4 | 1 | 0 | 0 | 2 | 0 | 23 | 0 | 1 | 0.071 | 0.063 | 0.089 | 152 |
| Christopher Volstad | 26 | P | Chi Cubs | 34 | 28 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0.179 | 0.147 | 0.179 | 326 |
| Jonathan Sanchez | 30 | P | Colorado | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 |
| Josh Beckett | 32 | P | LA Dodgers | 17 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 |
| Jorge De La Rosa | 31 | P | Colorado | 5 | 5 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0.400 | 0.400 | 0.400 | 800 |
| Brooks Raley | P | Chi Cubs | 10 | 10 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0.200 | 0.200 | 0.200 | 400 | |
| Jeff Karstens | 30 | P | Pittsburgh | 28 | 28 | 3 | 3 | 0 | 0 | 0 | 2 | 0 | 15 | 0 | 0 | 0.107 | 0.107 | 0.107 | 214 |
| Ross Ohlendorf | 30 | P | San Diego | 17 | 16 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0.063 | 0.059 | 0.063 | 122 |
| Joe Kelly | St. Louis | 35 | 33 | 3 | 5 | 2 | 0 | 0 | 2 | 0 | 13 | 0 | 1 | 0.152 | 0.143 | 0.212 | 355 | ||
| Miguel Batista | 41 | P | NY Mets | 7 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 |
| Travis Wood | 25 | P | Chi Cubs | 55 | 53 | 5 | 10 | 3 | 0 | 1 | 4 | 0 | 20 | 0 | 0 | 0.189 | 0.182 | 0.302 | 484 |
| Brandon Dickson | 28 | RF | St. Louis | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0.500 | 0.500 | 0.500 | 1000 |
| Mike McClendon | 27 | P | Milwaukee | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 |
| Chris Carpenter | 37 | P | St. Louis | 6 | 6 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0.167 | 0.167 | 0.167 | 334 |
| Sam Lecure | 28 | P | Cincinnati | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0.000 | 0.500 | 0.000 | 500 |
| Joshua Roenicke | 30 | P | Colorado | 13 | 12 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0.083 | 0.154 | 0.083 | 237 |
| Casey Kelly | 23 | P | San Diego | 12 | 10 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0.200 | 0.167 | 0.200 | 367 |
| Michael Bowden | 26 | P | Chi Cubs | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 |
| Luis Avilan | 23 | P | Atlanta | 3 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.333 | 0.333 | 0.333 | 666 |
| Chad Billingsley | 28 | P | LA Dodgers | 47 | 42 | 1 | 8 | 1 | 0 | 0 | 2 | 0 | 18 | 0 | 1 | 0.190 | 0.170 | 0.214 | 384 |
| Roman Solis | 25 | C | San Diego | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0.000 | 0.000 | 0.000 | 0 |
| Paul Maholm | 30 | P | Atlanta | 25 | 24 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 0.042 | 0.040 | 0.042 | 82 |
| Randy Wolf | 36 | P | Milwaukee | 46 | 40 | 3 | 6 | 0 | 0 | 0 | 4 | 0 | 11 | 0 | 2 | 0.150 | 0.130 | 0.150 | 280 |
| Zachary Lutz | 26 | 3B | NY Mets | 11 | 11 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0.091 | 0.091 | 0.091 | 182 |
