Drew Storen will make another minor league rehab appearance in Class A Potomac, and this time, Manager Davey Johnson said, Nationals coaches are hoping the reliever works on his command.

Storen, out all season after an April surgery to remove a bone chip from his right elbow, has pitched in five minor league games. He has allowed six earned runs on sevens hits. But it's not his statistics that will dictate when he is ready to return. How he has performed and how he is feeling will determine it.