The highly-anticipated meeting betweeen the defending champion Cavaliers and the top-seeded Warriors did not disappoint initially, with sensational dunks by the Cavaliers' LeBron James as well as the Warriors' Durant and JaVale McGee during a see-sawing first quarter.
But the wheels came off for the Cavaliers as soon as the second half started, with Durant sinking a three-pointer and Warriors center Zaza Pachulia hitting a lay-up on a 10-0 run.
The visiting Cavaliers also hurt themselves with 20 turnovers on the night, tying an NBA record, compared to the Warriors' four.
The teams will meet again in Oakland on Monday for game two of the best-of-seven series.