A-ROD IS J.LO’S BIGGEST FAN

ALEX RODRIGUEZ is a baseball legend — but the former Yankees slugger confesses when he was a struggling player years ago, he was a big fan of his current galpal, JENNIFER LOPEZ.

In fact, he was so gaga over the singer-actress, he got her to autograph a poster he had of her. In a tweet, he writes, “#TBT to almost 20 years ago when a big time global pop superstar signed a pic for a young ball player.” Incredibly, A-Rod still has the poster — and now he’s got the real thing, too!