MLB's Adam Jones Buys Cal Ripken's Massive $12.5 Mil Estate

From one Oriole to another ... MLB star Adam Jones just bought Cal Ripken Jr.'s insane $12.5 million Maryland estate!!

As we previously reported ... Ripken's been trying to part ways with the 24-acre estate since 2016 -- initially asking for $12.5 mil before knocking it down to $9.75 milli back in April 2017.

The Hall of Famer found a buyer in the current Baltimore slugger ... and according to Seth Rosenthal of The Athletic, Jones -- a real estate enthusiast -- couldn't pass up the sweet deal.

Jones' new crib comes with 6 bedrooms, 15 bathrooms, a home theater, 10-person spa, private hiking trails, pool, baseball field, indoor basketball court, full gym and a private fishing pond!!

While the final selling price has not been made available, the 32-year-old has made nearly $100 million during his long career ... so yeah, just a drop in the bucket for Jones.