The Milwaukee Bucks will face either the Philadelphia 76ers or Toronto Raptors for a place in the NBA Finals.
James Harden scored 38 points and grabbed 10 rebounds as the Houston Rockets survived a late scare to beat the Golden State Warriors 112-108 and level their play-off series.
The Portland Trail Blazers defeated the Denver Nuggets in quadruple overtime to earn a 2-1 lead in their Western Conference semi-final series.
Giannis Antetokounmpo scored 29 points to help lift the Milwaukee Bucks to a 123-102 win over the Boston Celtics and level their semi-final play-off series.
Kevin Durant outplayed James Harden as the Golden State Warriors edged the Houston Rockets 104-100 in their highly-anticipated Western Conference semi-finals opener.
The Boston Celtics beat the Indiana Pacers 110-106 to seal a series sweep and become the first team to advance to the second round of the NBA play-offs.
The Boston Celtics are a win away from round two of the Eastern Conference play-offs after taking their series lead over the Indiana Pacers to 3-0.
The Boston Celtics rallied from 11 points down heading into the fourth quarter to beat the Indiana Pacers 99-91.
Top seeds the Milwaukee Bucks opened their play-off campaign in style with a 121-86 thrashing of the Detroit Pistons.
The Charlotte Hornets kept their NBA play-off hopes alive with a dramatic 113-111 victory over the Toronto Raptors.
James Harden amassed 31 points as the Houston Rockets downed the Los Angeles Clippers 135-103 at the Staples Center.