| Arizona Diamondbacks (12-11) at Washington Nationals (14-8) |
| Game One |
Tuesday, May 1st, 7:05 p.m. |
| Game Two |
Wednesday, May 2nd, 7:05 p.m. |
| Game Three |
Thursday, May 3rd, 7:05 p.m. |
| Records |
| 2012 Head-to-Head Record |
First meeting |
| 2011 Head-to-Head Record |
Arizona 5-3 (2-2 at Ari; 3-1 at Was) |
| 2010 Head-to-Head Record |
Washington 4-3 (2-2 at Ari; 2-1 at Was) |
| 2009 Head-to-Head Record |
Washington 5-1 (2-1 at Ari; 3-0 at Was) |
| Home Record |
Arizona 6-7; Washington 8-2 |
| Away Record |
Arizona 6-4; Washington 6-6 |
| Current Streak |
Arizona (W2); Washington (L4) |
| Record vs. Eastern Division |
Arizona 5-6 |
| Record vs. Western Division |
Washington 2-4 |
| 2011 Meetings |
| 6/02 - Washington, 6-1 (at Ari - WP: Zimmermann; LP: Duke) |
| 6/03 - Arizona, 4-0 (at Ari - WP: Collmenter; LP: Maya) |
| 6/04 - Arizona, 2-0 (at Ari - WP: Saunders; LP: L.Hernandez) |
| 6/05 - Washington, 9-4 (11) (at Ari - WP: S.Burnett; LP: Paterson) |
| 8/22 - Washington, 4-1 (at Was - WP: Detwiler; LP: Saunders) |
| 8/23 - Arizona, 2-0 (at Was - WP: Kennedy; LP: Zimmermann) |
| 8/24 - Arizona, 4-2 (at Was - WP: D.Hudson; LP: L.Hernandez) |
| 8/25 - Arizona, 8-1 (at Was - WP: Miley; LP: Lannan) |
| 2010 Meetings |
| 8/02 - Washington, 3-1 (at Ari - WP: L.Hernandez; LP: R.Lopez) |
| 8/03 - Arizona, 6-1 (at Ari - WP: Saunders; LP: Olsen) |
| 8/04 - Washington, 7-2 (at Ari - WP: Stammen; LP: Kennedy) |
| 8/05 - Arizona, 8-4 (at Ari - WP: Enright; LP: Detwiler) |
| 8/13 - Washington, 4-2 (at Was - WP: Lannan; LP: Saunders) |
| 8/14 - Arizona, 9-2 (at Was - WP: Kennedy; LP: Marquis) |
| 8/15 - Washington, 5-3 (at Was - WP: Clippard; LP: Norberto) |
| 2009 Meetings |
| 5/08 - Washington, 5-4 (at Ari - WP: Martis; LP: Petit) |
| 5/09 - Washington, 2-1 (at Ari - WP: Lannan; LP: D.Davis) |
| 5/10 - Arizona, 10-8 (at Ari - WP: E.Vasquez; LP: Kensing) |
| 8/07 - Washington, 7-6 (at Was - WP: Bergmann; LP: Gutierrez) |
| 8/08 - Washington, 5-2 (at Was - WP: Mock; LP: Haren) |
| 8/09 - Washington, 9-2 (at Was - WP: Martin; LP: Petit) |
| Arizona last five games |
Washington last five games |
| 4/25 - L vs. Philadelphia, 2-7 |
4/25 - W at San Diego, 7-2 |
| 4/27 - W at Miami, 5-0 |
4/26 - L at San Diego, 1-2 |
| 4/28 - L at Miami, 2-3 |
4/27 - L at Los Angeles, 2-3 |
| 4/29 - W at Miami, 8-4 |
4/28 - L at Los Angeles, 3-4 (10) |
| 4/30 - W at Miami, 9-5 |
4/29 - L at Los Angeles, 0-2 |