The Cavs' furious comeback attempt in the second half eventually fell short in a 102-97 loss to Dallas on Monday afternoon.
The Cavs at one point trailed by 24, but thanks to 16 points from Kyrie Irving in the third quarter and a 21-rebound performance from Anderson Varejao, the Cavs cut the lead down to 2 points in the fourth quarter, 91-89, after Luol Deng hit a 3-pointer.
Monta Ellis missed two free throws in with 3.4 seconds left to give the Cavs a final shot at tying the game, down 100-97.
With 2.8 seconds left, Jarrett Jack couldn't in-bound the ball and was called for a 5-second violation. That led to Ellis hitting two free throws and putting the game out of reach.
Irving finished with a game-high 26. Varejao had 18 points. Deng had 20. Tristan Thompson had 19 points and 10 rebounds.