| 2012 NL Leaders | |||||||||||||||||
| Name | Age | Team | G | W | L | IP | TBF | H | 2B | 3B | HR | R | ER | BB | SO | ERA | RA9 |
| Yusmeiro Petit | 28 | San Francisco | 1 | 0 | 0 | 4.2 | 22 | 7 | 0 | 0 | 0 | 2 | 2 | 4 | 1 | 3.85 | 3.85 |
| Tim Stauffer | 30 | San Diego | 1 | 0 | 0 | 5.0 | 24 | 7 | 0 | 0 | 1 | 4 | 3 | 3 | 5 | 5.40 | 7.20 |
| Todd Redmond | 27 | Cincinnati | 1 | 0 | 1 | 3.1 | 22 | 7 | 1 | 0 | 1 | 4 | 4 | 5 | 2 | 10.81 | 10.81 |
| Aneury Rodriguez | 25 | Houston | 1 | 0 | 0 | 6.0 | 22 | 2 | 0 | 0 | 2 | 2 | 2 | 2 | 6 | 3.00 | 3.00 |
| Dustin Moseley | 31 | San Diego | 1 | 0 | 0 | 5.0 | 22 | 5 | 2 | 0 | 1 | 5 | 5 | 2 | 4 | 9.00 | 9.00 |
| Chris Narveson | 31 | Milwaukee | 2 | 1 | 1 | 9.0 | 41 | 10 | 3 | 0 | 2 | 8 | 7 | 4 | 5 | 7.00 | 8.00 |
| John Ely | LA Dodgers | 2 | 0 | 2 | 2.2 | 19 | 6 | 1 | 0 | 0 | 6 | 6 | 4 | 3 | 20.22 | 20.22 | |
| Zach Putnam | 25 | Colorado | 2 | 0 | 0 | 2.0 | 9 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| Charles Fick | St. Louis | 2 | 0 | 0 | 1.2 | 9 | 3 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 5.39 | 5.39 | |
| Julio Teheran | 22 | Atlanta | 2 | 0 | 0 | 6.1 | 24 | 5 | 0 | 0 | 0 | 4 | 4 | 1 | 5 | 5.69 | 5.69 |
| Edwar Cabrera | 25 | Colorado | 2 | 0 | 2 | 5.2 | 33 | 9 | 1 | 0 | 3 | 9 | 7 | 7 | 5 | 11.11 | 14.29 |
| Brian Wilson | 30 | San Francisco | 2 | 0 | 0 | 2.0 | 12 | 4 | 2 | 0 | 0 | 2 | 2 | 2 | 2 | 9.00 | 9.00 |
| Jonathan Sanchez | 30 | Colorado | 3 | 1 | 9 | 11.1 | 57 | 17 | 3 | 3 | 3 | 13 | 12 | 9 | 9 | 9.53 | 10.33 |
| Matt Palmer | 33 | San Diego | 3 | 0 | 0 | 2.0 | 10 | 2 | 0 | 0 | 1 | 2 | 2 | 2 | 2 | 9.00 | 9.00 |
| Tony Cingrani | Cincinnati | 3 | 0 | 0 | 5.0 | 22 | 4 | 0 | 0 | 1 | 1 | 1 | 2 | 9 | 1.80 | 1.80 | |
| Kyle Weiland | Houston | 3 | 0 | 3 | 17.2 | 79 | 24 | 4 | 0 | 5 | 13 | 13 | 7 | 13 | 6.62 | 6.62 | |
| Jorge De La Rosa | 31 | Colorado | 3 | 0 | 2 | 10.2 | 53 | 17 | 3 | 0 | 5 | 14 | 11 | 2 | 6 | 9.28 | 11.81 |
| Chris Carpenter | 37 | St. Louis | 3 | 0 | 2 | 17.0 | 72 | 16 | 4 | 1 | 2 | 7 | 7 | 3 | 12 | 3.71 | 3.71 |
| Jonathan Albaladejo | 30 | Arizona | 3 | 0 | 0 | 3.0 | 15 | 5 | 2 | 0 | 1 | 3 | 3 | 0 | 2 | 9.00 | 9.00 |
| Christopher Schwinden | 26 | NY Mets | 3 | 0 | 1 | 8.2 | 46 | 15 | 2 | 2 | 4 | 13 | 12 | 3 | 1 | 12.46 | 13.49 |
| Mike Pelfrey | 28 | NY Mets | 3 | 0 | 0 | 19.2 | 85 | 24 | 2 | 1 | 0 | 5 | 5 | 4 | 13 | 2.29 | 2.29 |
| Trevor Bauer | Arizona | 4 | 1 | 2 | 16.1 | 77 | 14 | 6 | 0 | 2 | 13 | 11 | 13 | 17 | 6.06 | 7.16 | |
| Jason Berken | 29 | Chi Cubs | 4 | 0 | 3 | 18.2 | 85 | 23 | 4 | 2 | 3 | 14 | 10 | 6 | 11 | 4.82 | 6.75 |
| Brandon Dickson | 28 | St. Louis | 4 | 0 | 0 | 6.1 | 32 | 10 | 1 | 1 | 2 | 7 | 5 | 2 | 6 | 7.11 | 9.95 |
| D.J. Carrasco | NY Mets | 4 | 0 | 0 | 3.2 | 18 | 6 | 0 | 1 | 2 | 3 | 3 | 0 | 3 | 7.36 | 7.36 | |
| Rick Vanden Hurk | Pittsburgh | 4 | 0 | 1 | 2.2 | 16 | 5 | 0 | 0 | 0 | 4 | 4 | 1 | 3 | 13.48 | 13.48 | |
| Rodrigo Lopez | 37 | Chi Cubs | 4 | 0 | 1 | 6.1 | 34 | 8 | 1 | 2 | 0 | 6 | 4 | 5 | 2 | 5.69 | 8.53 |
| Travis Blackley | 30 | San Francisco | 4 | 0 | 0 | 5.0 | 25 | 7 | 0 | 2 | 0 | 6 | 5 | 2 | 2 | 9.00 | 10.80 |
| Eric Hacker | 29 | San Francisco | 4 | 0 | 1 | 9.2 | 45 | 14 | 3 | 0 | 2 | 6 | 6 | 2 | 8 | 5.58 | 5.58 |
| Bryan Morris | 25 | Pittsburgh | 5 | 0 | 0 | 5.0 | 20 | 2 | 0 | 0 | 0 | 2 | 1 | 2 | 6 | 1.80 | 3.60 |
