Justin Bieber earned the J in his first name on Thursday ... showing off his solid jumper as he drained buckets in a basketball game.
The pop superstar showed up at The Surgeon's studio in Los Angeles to ball out in the famous shoe customizer's organized hoops league ... suiting up for Team Nahmias in their matchup against SRGN.
JB had a couple highlights in the contest ... showing off his range and passing abilities as he played alongside his longtime buddy Ryan Good and fashion designer Doni Nahmias.
It wasn't enough to help his team get the win, though ... as Nahmias fell to SRGN, 109-71.
Of course, the "Stay" singer is no stranger to showing off his athleticism -- whether it's on the hardwood, soccer field or hockey rink ... the guy can hold his own.
It looks like Bieber has stayed busy in the gym ... as his technique has never looked better.
As he says in his "Private Landing" song with Don Toliver -- "heat it up, microwave" -- and now the line can be about his hoop skills, too!!