Johnson also said that Dan Haren, who has been on the disabled list since June 23, will throw a simulated game on Wednesday. Barring any setbacks, the veteran right-hander will reclaim his spot in the starting rotation on July 8 or 9.
"It depends on how [Haren] comes through tomorrow," Johnson said. "But the ball's coming out of his hand real good, his cutter had a little better tilt. Everything's good."
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. Tom Schad is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.