It's the first playoff game in the history of Nationals Park, and the first in DC in 79 years. The Wednesday matinee is a critical Game 3 of the National League Division Series with the loser getting pushed to the brink of elimination. The Nats will turn to veteran Edwin Jackson, who had his struggles in the final month of the season, including against the Cardinals. Mike Matheny will turn to Chris Carpenter for just his fourth start of the season.

As you'd expect, Davey Johnson will send out his top lineup with Jayson Werth leading off and Bryce Harper, who's battling a fever, hitting second. Matheny also made no changes to his lineup.

Cardinals Lineup

1. Jon Jay (L) CF
2. Carlos Beltran (S) RF
3. Matt Holliday (R) LF
4. Allen Craig (R) 1B
5. Yadier Molina (R) C
6. David Freese (R) 3B
7. Daniel Descalso (L) 2B
8. Pete Kozma (R) SS
9. Chris Carpenter (R) P

Nationals Lineup

1. Jayson Werth (R) RF
2. Bryce Harper (L) CF
3. Ryan Zimmerman (R) 3B
4. Adam LaRoche (L) 1B
5. Michael Morse (R) LF
6. Ian Desmond (R) SS
7. Danny Espinosa (S) 2B
8. Kurt Suzuki (R) C
9. Edwin Jackson (R) P

First pitch is scheduled for 1:07 p.m. ET at Nationals Park.