Today’s opponent – Colorado Rockies. Last Game on June 20, 2013 Washington 5 Colorado 1.
| Opponent | Won | Lost | Year |
| COL | 4 | 2 | 2005 |
| COL | 0 | 8 | 2006 |
| COL | 3 | 4 | 2007 |
| COL | 3 | 4 | 2008 |
| COL | 0 | 6 | 2009 |
| COL | 3 | 5 | 2010 |
| COL | 1 | 2 | 2011 |
| COL | 3 | 4 | 2012 |
| COL | 3 | 1 | 2013 |
| 2005 – 2013 | Won | Lost | 2011 – 2013 | Won | Lost | 2012 – 2013 | Won | Lost |
| ATL | 71 | 75 | NYM | 19 | 12 | NYM | 16 | 7 |
| NYM | 65 | 75 | MIA | 18 | 15 | MIA | 14 | 10 |
| MIA | 58 | 82 | ATL | 17 | 20 | ATL | 13 | 15 |
| PHI | 54 | 89 | PHI | 15 | 18 | PHI | 12 | 12 |
| PIT | 30 | 25 | CHC | 10 | 4 | CIN | 9 | 5 |
| HOU | 28 | 25 | SFG | 10 | 6 | CHC | 7 | 3 |
| CIN | 27 | 27 | SDP | 9 | 7 | HOU | 7 | 1 |
| ARI | 27 | 21 | CIN | 9 | 5 | COL | 6 | 5 |
| CHC | 27 | 25 | PIT | 8 | 8 | SFG | 6 | 3 |
| SFG | 26 | 28 | STL | 8 | 8 | SDP | 5 | 4 |
| MIL | 26 | 30 | MIL | 8 | 6 | MIL | 5 | 3 |
| STL | 23 | 31 | HOU | 8 | 3 | STL | 4 | 6 |
| COL | 20 | 36 | COL | 7 | 7 | PIT | 4 | 4 |
| BAL | 20 | 26 | BAL | 6 | 10 | ARI | 4 | 2 |
| SDP | 19 | 33 | ARI | 6 | 4 | BAL | 3 | 7 |
| LAD | 18 | 26 | CHW | 5 | 1 | TOR | 3 | 0 |
| SEA | 9 | 0 | SEA | 3 | 0 | CHW | 3 | 0 |
| TOR | 9 | 9 | TOR | 3 | 0 | BOS | 3 | 0 |
| CHW | 5 | 4 | BOS | 3 | 0 | LAD | 3 | 6 |
| TBR | 4 | 5 | LAD | 3 | 6 | MIN | 2 | 1 |
| MIN | 4 | 5 | TBR | 2 | 1 | DET | 2 | 0 |
| BOS | 4 | 5 | MIN | 2 | 1 | TBR | 2 | 1 |
| NYY | 4 | 5 | DET | 2 | 0 | CLE | 1 | 2 |
| CLE | 4 | 5 | CLE | 1 | 2 | NYY | 0 | 3 |
| LAA | 3 | 6 | LAA | 0 | 3 | Grand Total | 134 | 100 |
| OAK | 3 | 0 | NYY | 0 | 3 | |||
| KCR | 2 | 1 | Grand Total | 182 | 150 | |||
| DET | 2 | 6 | ||||||
| TEX | 2 | 4 | ||||||
| Grand Total | 594 | 709 |
