Baseball great Alex Rodriguez is not exactly pining away by his lonesome out in Vail, Colo., where he's on the mend from recent hip surgery, according to sources.

In addition to romancing and getting to second base with his favorite human being - himself - in those narcissistic Details photos, he's making time for the ladies.

A-Rod reportedly has been hosting a "revolving door" of gorgeous beauties at his rented condo - one sexy ski bunny after the next, the Chicago Sun-Times reports.

"I've never seen anything like it," a Vail observer laughed about Rodriguez. "His nickname [of A-Rod] is very appropriate." Yes it is. In so many ways, really.

GOTTA LIMBER UP: Alex Rodriguez may be rehabbing an injured hip, but the New York Yankees slugger is still playing the field and hitting plenty of home runs.

"'The guy's been busy day and night. I thought hip surgery meant you had to keep your hips immobile for a while." Well, it doesn't rule out ... forget it.

One thing's clear: He's over Madonna.

The superstar supposedly phoned the other night, but Alex Rodriguez ducked her call - claiming he was getting "treatment" for his healing hip when he was merely partying it up with several lovely ladies in the hot tub.

Ah, to be severely injured and overpaid.