Blake Griffin scored 23 and DeAndre Jordan had 20 points and 22 rebounds for Los Angeles, which didn't give up the Lead until the first minute of overtime.
The Cavaliers again played without starting point guard Derrick Rose, who will miss at least two more weeks with a nagging left ankle injury.
The Cavs spent all night chasing the Clippers and caught them at 105-all when Love grabbed an offensive rebound and fed James, who dropped an uncontested 3-pointer with 47 seconds left.
Down 10 points, Cleveland chipped away and despite some defensive lapses, the Cavs somehow tied the Clippers 56-all at halftime on James' step-back jumper over Griffin in the final second.
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