Derek Jeter took a big first step Monday. Literally. Jeter ran for the first time since having surgery to repair a broken left ankle over the offseason. It’s the latest smidge of progress in his rehab that he believes will have him in the lineup for the Yankees on Opening Day. “I’m right where I need to be,” Jeter said as he signed autographs before leaving the Yankees’ minor-league complex. “I’ve gotten the OK to do everything now. “I’ve got all the green lights I need,” he added. Jeter said he felt “great” while running on a treadmill at the gym at the complex, though he did not say how long he ran. He joked that he ran on a “hidden field” so they couldn’t see. But teammate Curtis Granderson saw Jeter on the treadmill and said, “It was straightforward, but it looked good. “It was weird. He was on there and I just came up and we were talking. I didn’t think about that because he wasn’t hobbling around, wincing in pain, or making any of those gestures. To me it looked like he was just warming up, getting himself ready to go. “You hear things about him and you expect people to be helping him off the field and things like that. And that’s not the case. He’s definitely done a lot of stuff, and we still got a little more time before we get things started April 1.” Read more: