"I feel like I could have played [Friday], the way I moved around and ran and did all that," said Headley, who went 1-for-4 on Saturday. "Once you're there, players want to play. That's what I want to do, I want to go play and I want to do my job."
Yankees manager Joe Girardi had acknowledged that the team considered resting Headley through the All-Star break, and the team was waiting until Headley got through batting practice without incident before making a roster move to accommodate infielder Rob Refsnyder.
"If I felt like I was at any greater risk than any other game I've ever played, I wouldn't be playing, I'll tell you that much," Headley said.
Headley entered play Saturday batting .251 with eight homers and 29 RBIs in 81 games.
Bryan Hoch is a reporter for MLB.com. Follow him on Twitter @bryanhoch, on Facebook and read his MLBlog, Bombers Beat. This story was not subject to the approval of Major League Baseball or its clubs.