Sucks to lose in overtime ... but James Harden found a place to lift his spirits after the Rockets vs. Clippers game -- the strip club!
Harden his up Ace of Diamonds in Los Angeles around 1:45 AM this morning ... hours after his team blew a shot to upset the Clips in overtime and lost 140-132.
No sign of Khloe Kardashian -- who was taping her new show earlier in evening.
