"It was improved, but I'm not quite there yet," Swisher said.
Swisher was injured on Saturday when he slid into home plate and collided with Nationals catcher Jesus Flores. Swisher limped off the field after the play and later said it "feels like the worst charley horse ever."
Yankees manager Joe Girardi said he wasn't sure if Swisher would be available to pinch-hit on Monday against the Braves.
"It's a bone bruise. It's going to go away," Girardi said. "Is it another day after [Monday]? Possibly. Do I expect to have him in the next couple days? I do."