career regular season statistics    
  
  | Year | Team | League | 
          W           
            Wins           
         | 
        
          L           
            Losses           
         | 
        
          ERA           
            Earned Run Average           
         | 
        
          G           
            Games           
         | 
        
          GS           
            Games Started           
         | 
        
          CG           
            Complete Games           
         | 
        
          SHO           
            Shutouts           
         | 
        
          SV           
            Saves           
         | 
        
          HLD           
            Holds           
         | 
        
          IP           
            Innings Pitched           
         | 
        
          H           
            Hits Allowed           
         | 
        
          R           
            Runs Allowed           
         | 
        
          ER           
            Earned Runs           
         | 
        
          HR           
            Home Runs Allowed           
         | 
        
          BB           
            Walks           
         | 
        
          SO           
            Strikeouts           
         | 
        
          WHIP           
            Walks and Hits Per Inning Pitched           
         | 
      
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | Boston | AL | 0 | 1 | 9.82 | 9 | 0 | 0 | 0 | 4 | 0 | 7.1 | 10 | 8 | 8 | 4 | 6 | 5 | 2.18 | 
| 2013 | Pawtucket | AAA | 0 | 0 | 9 | 2 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1.5 | |
| 2012 | Pittsburgh | NL | 5 | 2 | 2.72 | 63 | 0 | 0 | 0 | 36 | 0 | 59.2 | 40 | 18 | 18 | 8 | 36 | 67 | 1.27 | 
| 2011 | Pittsburgh | NL | 1 | 4 | 1.83 | 70 | 0 | 0 | 0 | 40 | 0 | 68.2 | 56 | 17 | 14 | 1 | 16 | 61 | 1.05 | 
| 2010 | Pittsburgh | NL | 4 | 1 | 3.62 | 72 | 0 | 0 | 0 | 6 | 18 | 69.2 | 58 | 28 | 28 | 6 | 26 | 100 | 1.21 | 
| 2010 | Bradenton | A | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |
| 2009 | Pittsburgh | NL | 0 | 1 | 1.72 | 33 | 0 | 0 | 0 | 0 | 7 | 31.1 | 23 | 12 | 6 | 0 | 20 | 37 | 1.37 | 
| 2009 | Washington | NL | 1 | 3 | 7.72 | 34 | 0 | 0 | 0 | 5 | 2 | 32.2 | 50 | 28 | 28 | 3 | 14 | 35 | 1.96 | 
| 2009 | Total Wsh/Pit | NL | 1 | 4 | 4.78 | 67 | 0 | 0 | 0 | 5 | 9 | 64 | 73 | 40 | 34 | 3 | 34 | 72 | 1.67 | 
| 2008 | Washington | NL | 6 | 3 | 3.95 | 69 | 0 | 0 | 0 | 9 | 3 | 84.1 | 73 | 40 | 37 | 9 | 42 | 93 | 1.36 | 
| 2007 | Washington | NL | 5 | 3 | 6 | 12 | 11 | 0 | 0 | 0 | 0 | 51 | 59 | 35 | 34 | 9 | 38 | 43 | 1.9 | 
| 2007 | Columbus | AAA | 5 | 4 | 3.7 | 15 | 15 | 0 | 0 | 0 | 75.1 | 65 | 36 | 31 | 10 | 36 | 71 | 1.34 | |
| 2006 | Las Vegas | AAA | 4 | 3 | 4.48 | 14 | 14 | 0 | 0 | 0 | 74.1 | 70 | 47 | 37 | 7 | 39 | 46 | 1.47 | |
| 2006 | Jacksonville | AA | 7 | 2 | 2.58 | 12 | 12 | 0 | 0 | 0 | 66.1 | 49 | 19 | 19 | 4 | 38 | 67 | 1.31 | |
| 2005 | Jacksonville | AA | 9 | 8 | 4.92 | 23 | 21 | 0 | 0 | 0 | 111.2 | 118 | 71 | 61 | 17 | 55 | 102 | 1.55 | |
| 2005 | Vero Beach | A | 1 | 0 | 5.91 | 5 | 5 | 0 | 0 | 0 | 21.1 | 25 | 15 | 14 | 5 | 11 | 25 | 1.69 | |
| 2004 | Las Vegas | AAA | 7 | 7 | 5.05 | 25 | 22 | 0 | 0 | 0 | 119.1 | 128 | 78 | 67 | 22 | 75 | 97 | 1.7 | |
| 2003 | Las Vegas | AAA | 1 | 2 | 10.08 | 5 | 5 | 0 | 0 | 0 | 25 | 36 | 28 | 28 | 2 | 20 | 13 | 2.24 | |
| 2003 | Jacksonville | AA | 10 | 4 | 2.43 | 23 | 23 | 1 | 0 | 0 | 133.1 | 117 | 44 | 36 | 5 | 53 | 130 | 1.28 | |
| 2002 | Jacksonville | AA | 1 | 1 | 10.64 | 3 | 3 | 0 | 0 | 0 | 11 | 15 | 14 | 13 | 2 | 7 | 10 | 2 | |
| 2002 | Vero Beach | A | 10 | 6 | 4.2 | 25 | 25 | 2 | 1 | 0 | 143.2 | 129 | 74 | 67 | 11 | 51 | 139 | 1.25 | |
| 2001 | Wilmington | A | 9 | 11 | 3.38 | 27 | 26 | 0 | 0 | 0 | 144 | 136 | 71 | 54 | 13 | 55 | 116 | 1.33 | |
| 2000 | Great Falls | R | 3 | 1 | 4.75 | 12 | 11 | 0 | 0 | 0 | 55 | 49 | 32 | 29 | 4 | 23 | 40 | 1.31 | |
| Total | MLB | 22 | 18 | 3.85 | 362 | 11 | 0 | 0 | 100 | 404.2 | 369 | 186 | 173 | 40 | 198 | 441 | 1.4 | ||
| Total | AL | 0 | 1 | 9.82 | 9 | 0 | 0 | 0 | 4 | 7.1 | 10 | 8 | 8 | 4 | 6 | 5 | 2.18 | ||
| Total | NL | 22 | 17 | 3.74 | 353 | 11 | 0 | 0 | 96 | 397.1 | 359 | 178 | 165 | 36 | 192 | 436 | 1.39 | ||
| Total | AAA | 17 | 16 | 5.02 | 61 | 56 | 0 | 0 | 0 | 296 | 301 | 191 | 165 | 42 | 171 | 228 | 1.59 | ||
| Total | AA | 27 | 15 | 3.6 | 61 | 59 | 1 | 0 | 0 | 322.1 | 299 | 148 | 129 | 28 | 153 | 309 | 1.4 | ||
| Total | A | 20 | 17 | 3.91 | 59 | 56 | 2 | 1 | 0 | 311 | 290 | 160 | 135 | 29 | 117 | 283 | 1.31 | ||
| Total | R | 3 | 1 | 4.75 | 12 | 11 | 0 | 0 | 0 | 55 | 49 | 32 | 29 | 4 | 23 | 40 | 1.31 |