Jacoby Ellsbury studied Andy Pettitte 's slow windup. He took a few steps toward home. Then he took off. The Red Sox speedster slid headfirst, stirred up a cloud of dirt and looked at plate umpire Gary Cederstrom. The biggest thing is getting the courage to go, I guess. In that situation, bases loaded, you've got to make it, Ellsbury said after a 4-1 win Sunday night gave the Red Sox their 10th straight win and a three-game sweep of the New York Yankees . I was pretty confident that I could get in there.