Rajon Rondo can take all of the pregame set shots he wants, which is essentially how the inactive Celtics point guard spent yesterday morning.

Considering how his teammates ultimately faltered in his absence, Rondo inevitably has been able to see where he could have prevented what is now a 3-1 series hole for the Celtics against the New York Knicks.

“I could have made a little bit of difference,” Rondo said before yesterday’s 97-90 C’s win in overtime. “I don’t think we’d be where we are now, but that’s neither here nor there.”

What is real for Rondo is the frustration from not being able to help, courtesy of his season-ending ACL surgery three months ago.

“I don’t like losing,” he said. “I’m not on the floor right now — I’m still a part of the team — but I hate losing. Just trying to do the best I can with my teammates on the bench and the sideline, telling my teammates what I see.”

The one thing Rondo can’t get a feel for is his own recovery. Though the Celtics have said he should be ready for the start of training camp next fall as the result of what was only a partially torn ACL, don’t expect Rondo to have a timetable.

Even if he has used the miraculous comeback of NFL Vikings running back Adrian Peterson as his model.