Tristan Thompson, Corey Gamble Hit Nightclub to Celebrate Lakers Win

Tristan Thompson's back in the NBA and back in the L.A. club scene with his brother-in-Kardashian/Jenner-dom, Corey Gamble -- they soaked up some nightlife after the Lakers took home a big fat W.

Kris Jenner's bae and Khloe Kardashian's baby daddy headed to Bird Streets Club in WeHo to celebrate Tristan's new team, the Lakers, defeating the Timberwolves to earn a spot in the NBA playoffs. They left together around 1 AM Wednesday ... in a chauffeur-driven Maybach. Nice!

Neither guy had much to say as they exited, but gotta figure they were in good spirits after the W. Shout out to Corey's stylist, 'cause dude was rocking an eye-popping Lakers gold silk leisure suit as he sat courtside.

Tristan didn't see any playing time during his first game back from retirement.

Obviously, playing in L.A. means Tristan's closer to Khloe, too ... and as we reported, the duo's been spending time together recently -- even hitting up a McDonald's drive-thru together.

BTW .. today is Tristan and Khloe's daughter True's birthday -- so, we're guessing he and Corey were hashing out gift ideas last night.