Houston led 32-26 after one quarter and then won the second 38-12. The Rockets were up 15 midway through the period before a 19-2 run made it 70-38 at halftime, according to the Associated Press. Durant and Smith each had 16 points by the break.
Dallas got within 103-86 with about nine minutes left after a 9-0 run, six of those points from Marcus Sasser. Houston answered with an 8-2 burst, including 3-pointers from Durant and Fred VanVleet, and led 111-88 about a minute later. The Rockets' largest lead was 37.
Alperen Sengun had 23 points and 10 rebounds, and Amen Thompson added 16 points and 10 rebounds. VanVleet, back after missing last season with a torn ACL, scored six points with 11 assists. Houston shot 16 of 36 from 3 and had 32 assists. Tari Eason was ejected with about three minutes left in the first quarter after a flagrant foul 2 for shoving P.J. Washington to the floor.