Outfielder Josh Willingham, who is on the 15-day disabled list with a torn meniscus in his left knee, is currently at home in Alabama resting. He'll come back to Washington next week for an examination of his knee when the team returns home next week.
But general manager Mike Rizzo wouldn't guarantee that the left fielder would need surgery.
"Surgery hasn't been scheduled. I don't think it's a foregone conclusion that it's surgery yet," Rizzo said. "Let's see if he needs it first."
Willingham would need four to five weeks for the tear to heal if he didn't need surgery, however. That leaves almost no time for him to come back before the end of the season, and the Nationals have little willingness to rush him.
"If he did not need it, it would be a four-to-five week layoff," Rizzo said. "And then to ramp him back up, (it's) unlikely."