Alex Rodriguez Selling Magnificent Miami Mansion – Take A Peek Inside

He made big bucks at the house that Ruth built, then built quite the house of his own.

New York Yankee Alex Rodriguez is putting a "For Sale" sign (figuratively) in front of his lavish, 20,000-square foot Miami mansion, and we've got the pics for you on RadarOnline.com.

The former Seattle Mariner & Texas Ranger, 37, purchased the then-under construction house for $24 million in 2010 following his divorce from ex Cynthia Scurtis.

The baseball basher is asking $38 million for the abode in its current breathtaking state, as the 9-bedroom, 11-bathroom palace includes amenities such as a movie theater, a gymnasium, an elevator, a deck, and a 3,000 square-foot sports center equipped with a batting cage.

Since splitting with then-wife Cynthia in 2008, A-Rod's been linked to one stunner after the next, including Kate Hudson, Cameron Diaz and Madonna. He's currently involved with fit former wrestler Torrie Wilson.