Jimmy Rollins’ struggles at the plate suddenly make a lot more sense.

The 10-year veteran and 2007 NL MVP admitted that he had been incorrectly calculating his own batting average ever since he started playing youth baseball.

“I was taught that any time you put it in play, that counted as a hit,” Rollins said on Monday. “But now that I find out you actually need to reach base . . . I mean, wow . . . my batting average must be in the toilet right now. What is it, like .290?”

The revelation has given Rollins a renewed approach at the plate with the news that popups and groundouts count against his batting average.

“For years, I thought this hitting stuff was easy,” Rollins continued. “Hitting the ball in a spot where you can reach base is a lot harder, but I think I can get it done.”

Rollins recently said he was expecting to hit .400 for the month of May and is still on track to pull it off, although he would need to hit .519 for the remaining 18 games this month.