(John McDonnell/The Washington Post)

The Nationals’ utterly slim playoffs hopes rest on their play over the final 48 games. John Lannan (3-4, 4.10 ERA) faces his old team for the third time this season. Dan Haren (6-11, 5.14 ERA) faces off against Lannan yet again. Haren has a 2.40 ERA in his past five starts since coming off the disabled list. If he beats the Phillies, he will join Barry Zito and A.J. Burnett as the only active pitchers to beat all 30 major league teams. Jayson Werth is a career 10 for 29 with four HRs and two doubles off Lannan. The lineups are here. As always, discuss the game here.