Washington Nationals
- 23-21,
- 2nd NL East
| Date | Opponent | Result | Win | Loss | Save |
|---|---|---|---|---|---|
| Tue, May 1 | Arizona Diamondbacks vs Arizona (12-11) | L 1 - 5 | T. Cahill | J. Zimmermann | |
| Wed, May 2 | Arizona Diamondbacks vs Arizona (13-11) | W 5 - 4 | H. Rodríguez | J. Putz | |
| Thu, May 3 | Arizona Diamondbacks vs Arizona (13-12) | W 2 - 1 | R. Detwiler | I. Kennedy | H. Rodríguez |
| Fri, May 4 | Philadelphia Phillies vs Philadelphia (13-13) | W 4 - 3 | R. Perry | M. Schwimer | |
| Sat, May 5 | Philadelphia Phillies vs Philadelphia (13-14) | W 7 - 1 | G. González | V. Worley | |
| Sun, May 6 | Philadelphia Phillies vs Philadelphia (13-15) | L 3 - 9 | C. Hamels | J. Zimmermann | |
| Tue, May 8 | Pittsburgh Pirates @ Pittsburgh (12-16) | L 4 - 5 | T. Watson | H. Rodríguez | |
| Wed, May 9 | Pittsburgh Pirates @ Pittsburgh (13-16) | L 2 - 4 | B. Lincoln | R. Detwiler | J. Hanrahan |
| Thu, May 10 | Pittsburgh Pirates @ Pittsburgh (14-16) | W 4 - 2 | S. Strasburg | K. Correia | H. Rodríguez |
| Fri, May 11 | Cincinnati Reds @ Cincinnati (16-14) | W 7 - 3 | G. González | M. Leake | |
| Sat, May 12 | Cincinnati Reds @ Cincinnati (16-15) | W 2 - 1 | J. Zimmermann | J. Arredondo | H. Rodríguez |
| Sun, May 13 | Cincinnati Reds @ Cincinnati (16-16) | L 6 - 9 | S. Marshall | H. Rodríguez | |
| Mon, May 14 | San Diego Padres vs San Diego (12-23) | W 8 - 5 | C. Stammen | M. Mikolas | S. Burnett |
| Tue, May 15 | San Diego Padres vs San Diego (12-24) | L 1 - 6 | A. Bass | S. Strasburg | |
| Wed, May 16 | Pittsburgh Pirates vs Pittsburgh (17-19) | W 7 - 4 | G. González | E. Bedard | H. Rodríguez |
| Thu, May 17 | Pittsburgh Pirates vs Pittsburgh (17-20) | L 3 - 5 | J. McDonald | J. Zimmermann | J. Hanrahan |
| Fri, May 18 | Baltimore Orioles vs Baltimore (25-14) | L 1 - 2 | K. Gregg | R. Mattheus | P. Strop |
| Sat, May 19 | Baltimore Orioles vs Baltimore (26-14) | L 5 - 6 | J. Hammel | R. Detwiler | J. Johnson |
| Sun, May 20 | Baltimore Orioles vs Baltimore (27-14) | W 9 - 3 | S. Strasburg | W. Chen | |
| Mon, May 21 | Philadelphia Phillies @ Philadelphia (21-21) | W 2 - 1 | G. González | K. Kendrick | S. Burnett |
| Tue, May 22 | Philadelphia Phillies @ Philadelphia (21-22) | W 5 - 2 | J. Zimmermann | R. Halladay | T. Clippard |
| Wed, May 23 | Philadelphia Phillies @ Philadelphia (21-23) | L 1 - 4 | C. Hamels | E. Jackson | |
| Fri, May 25 | Atlanta Braves @ Atlanta (26-20) | W 7 - 4 | C. Wang | T. Hudson | T. Clippard |
| Sat, May 26 | Atlanta Braves @ Atlanta (26-21) | W 8 - 4 | S. Strasburg | K. Medlen | T. Clippard |
| Sun, May 27 | Atlanta Braves @ Atlanta (26-22) | W 7 - 2 | G. González | B. Beachy | |
| Mon, May 28 | Miami Marlins @ Miami (26-22) | L 3 - 5 | C. Zambrano | J. Zimmermann | H. Bell |
| Tue, May 29 | Miami Marlins @ Miami (27-22) | L 1 - 3 | A. Sánchez | E. Jackson | H. Bell |
| Wed, May 30 | Miami Marlins @ Miami (28-22) | L 3 - 5 | J. Johnson | C. Wang | H. Bell |
* if needed