Sandy Leon went 1-for-4 in the finale, his second start since being recalled from Double-A Harrisburg on Thursday. Flores was available off the bench, but having endured a rash of injuries to the five different catchers they've used this season, the Nats would prefer him to rest.
"The thing with [Flores] is that it bothers him hitting," manager Davey Johnson said. "So I've got another catcher with Sandy Leon that I'll go to the whip with."
Johnson added that Flores received inflammation treatment for his back on Saturday. Leon, though, joined Steve Lombardozzi and Danny Espinosa as switch-hitters in the Nats' lineup on Sunday, which complicated things for Braves right-hander Jair Jurrjens.