The Cleveland Cavaliers blew an 18-point lead but rallied in the closing stages to beat the Atlanta Hawks in the first match of their Eastern Conference second round series.
Cleveland led 72-54 but were overhauled and needed a late flourish to wrap up a 104-93 success at Quicken Loans Arena.
LeBron James scored 25 points for the Cavs while Kyrie Irving poured in 21 - but the Hawks' Dennis Schroder led all scorers with 27.
The Oklahoma City Thunder won the second match in their Western Conference semi-final play-off series against the San Antonio Spurs 98-97.
LaMarcus Aldridge led the scoring at AT&T Center with 41 points for the beaten Spurs, with Kevin Durant's 28 the highlight for the victors.