The series is averaging 17,367,000 viewers, the network announced Saturday.
Stephen Curry found his long-range touch and scored 38 points as the defending champion Warriors rebounded from a 30-point loss by beating the Cavs 108-97 in Game 4 on Friday night and taking a commanding 3-1 lead in the series.
The Game 4 audience peaked with 20,407,000 viewers from 11:30-midnight ET and the broadcast averaged 16,438,000 viewers. Additionally, the NBA Finals on ABC is expected to win the night across all of television for the 52nd consecutive time.
Game 4 delivered a record number of unique viewers for an NBA game on WatchESPN. The game generated 1,026,000 unique viewers, 52,800,000 total minutes streamed and an average minute audience of 300,000.
The NBA Finals will continue with Game 5 on Monday night at Oracle Arena, where the Warriors can become the seventh franchise to win consecutive titles with a victory.