Posted by Sabrina B. @gametimegirl

MTV star Rob Dyrdek has a 25 foot basketball rim hangin’ at his legendary Fantasy Factory indoor skate park & last night, NBA superstar Rudy Gay decided it needed to be dunked on.

TMZ has learned … Gay was at the downtown L.A. skate spot Wednesday shooting a promo video for the Young and Reckless clothing company, when he noticed the hoop … suspended 25 feet above a foam ball pit.

We’re told 6’8″ Gay — who signed an $85 MILLION contract with the Memphis Grizzlies last year — eyed up a platform near the rim … and then BET the Factory crew he could leap off the ledge and slam it home.

The Factory guys took the bet — but you gotta watch the video to see who wins.

SOURCE: TMZ