Game 6 between the Indiana Pacers and New York Knicks averaged 8.12 million viewers across TNT and truTV.
The Pacers' series-clinching win was the most-watched game of the season.
The game peaked with 9.91 million viewers.
The full six-game series averaged 6.96 million viewers, up 10% from the Celtics-Pacers last year.
The Thunder-Timberwolves series in the Western Conference finals averaged 5.59 million viewers.