Phil Hughes is 3-0 with a 1.69 ERA in his last three starts. Yankees left-hander Andy Pettitte said before Friday's game that perhaps Hughes was tipping his pitches. "Mechanically, I think he found something a few starts ago where he might be hiding the ball better," Pettitte said of the young right-hander. Hughes did agree that for the past three starts, he has been holding the ball differently. "After the third inning in Detroit [the complete-game victory June 3], I made a little mechanical adjustment trying to close my body off a little more," he said after beating the Nationals on Friday night. "It helps hide the ball and creates more of an angle to home plate. It's not an over-dramatic twist or anything like that, just a little turn that allows me to hide the ball better and create a better angle to home plate."