JONATHAN ERNST/Reuters (Reuters)

The Nationals will start a homestand tonight against the Colorado Rockies, with Jordan Zimmermann trying to bounce back from a rare bad start. Roy Oswalt is making his season debut for the Rockies. The Nationals will not have to worry about Troy Tulowitzki, who is on  the disabled list with a fractured rib he suffered when the Nationals were out in Colorado.

1. Denard Span, CF
2. Anthony Rendon, 2B
3. Ryan Zimmerman, 3B
4. Adam LaRoche, 1B
5. Jayson Werth, RF
6. Ian Desmond, SS
7. Steve Lombardozzi, LF
8. Kurt Suzuki, C
9. Jordan Zimmermann, SP

1. Tyler Colvin, CF
2. DJ LeMahieu, 2B
3. Carlos Gonzalez, LF
4. Michael Cuddyer, RF
5. Nolan Arenado, 3B
6. Todd Helton, 1B
7. Yorvit Torrealba, C
8. Jonathan Herrera, SS
9. Roy Oswalt, SP