The Washington Nationals take the field on Sunday looking for a series win, and their 50th victory of the season heading into the All-Star break. Jordan Zimmermann will be on the mound for Washington as they look to move 17 games over .500 on the season. Nationals manager Davey Johnson has Steve Lombardozzi in the leadoff spot on Sunday, with rookie catcher Jhonatan Solano getting a start and batting eight.

Sunday's full Washington lineup, via the @NationalsPR twitter feed:

#Nationals lineup vs. COL - Lombardozzi 7, Harper 8, Zimmerman 5, Morse 9, LaRoche 3, Desmond 6, Espinosa 4, Solano 2, Zimmermann 1

— Nationals PR (@NationalsPR) July 8, 2012

Here is the Colorado lineup, via the team's official twitter feed:

#Rockies lineup7/8 at WAS: Fowler8, Scutaro4, Gonzalez7, Colvin9, Helton3, Pacheco5, Herrera6, Nieves2, Guthrie1.

— Colorado Rockies (@Rockies) July 8, 2012

First pitch is scheduled for 1:35 p.m. EST at Nationals Park.

Read more on the Nationals at Federal Baseball and head over to Purple Row for the Rockies fans' perspective. Baseball Nation is your source for news and analysis around Major League Baseball.