Mark DeRosa's recovery from a strained left oblique muscle was stunted in an odd way, according to Nationals manager Davey Johnson. As Bryce Harper came into the dugout Sunday night after he stole home against the Phillies, DeRosa aggravated his oblique when Harper gave him a forceful high-five. "I don't know if that set back the rehab or not," Johnson said. "But I said, 'Why didn't use your [right] hand?' He said it was spur of the moment."