Delonte West is back on the basketball court ... and TMZ Sports has learned the ex-NBA star is training for a chance at playing in Ice Cube's BIG3 league!!
Sources tell us the 38-year-old has been training at the Pat The Roc Basketball Academy in Gaithersburg, Maryland every single day for the past month ... in hopes of making a huge comeback.
We're told despite everything that's happened recently, West hasn't lost his touch ... and looking at footage that surfaced online this week, it's true.
In video posted on social media, the guy is able to hit several shots .