J.R. Smith set a franchise postseason record for 3-pointers and the Cavaliers opened the Eastern Conference finals with a road win over the Hawks.

Smith buried eight 3s and scored 28 points and LeBron James had 31 points, eight rebounds and six assists as Cleveland beat Atlanta 97-89 in Game 1 on Wednesday night.

Jeff Teague scored 27 points to lead Atlanta, but the Hawks lost starting forward DeMarre Carroll to a left knee injury in the fourth quarter.

Tristan Thompson added 14 points and 10 rebounds in the win and Kyrie Irving, who is battling tendinitis in his left knee, had 10 points and six assists in 27 minutes.

Al Horford had 16 points, Paul Millsap scored 13 and Kent Bazemore chipped in with 10 off the bench for the top-seeded Hawks.