Alijah Arenas Car Crash Video Shows Fiery Wreck, Star Writhing On Ground

Basketball phenom Alijah Arenas rolled on the ground in a huge puddle of water just moments after he was ripped from a burning Tesla Cybertruck … video, obtained by TMZ Sports, shows.

The clip was recorded by a neighbor who tells us he heard the crash happen at around 5 AM Thursday just outside of his home in L.A.’s San Fernando Valley.

The witness says he raced out and saw Arenas stuck inside the flame-engulfed vehicle after it had barreled over a fire hydrant and come to a stop on a nearby tree.

Alijah — who we’re told was shirtless and shoeless by the time Good Samaritans reached him — was pulled from the ride and placed on the road, just a few yards away from the accident. You can see him rolling around in apparent pain … all while clearly trying to catch his breath.

The witness said moments later, the 18-year-old high school basketball phenom was placed on a stretcher and taken to a nearby hospital.

Authorities stated Thursday he was transported in “stable condition,” though no further medical update was given.

Alijah, the son of former NBA superstar Gilbert Arenas, is a five-star recruit who committed to USC earlier this year. He averaged 31 points and 7.8 rebounds … and was so impressive, he told us earlier this month, adidas had actually inked him to a sponsorship deal.