Nick Young is doing his best full-court press on LeBron James' son, Bronny — telling TMZ Sports the basketball phenom should play college ball at USC instead of Ohio State.

The NBA superstar's oldest son had the sports world buzzin' after posing in a Buckeyes uniform this week … just days after the James gang hit up the OSU-Notre Dame football game on Saturday.

Bronny has made it clear he still hasn't committed anywhere, but he seemed to embrace wearing the Scarlet and Grey … evidenced by how happy he and his parents were during the photoshoot.