The Knicks looked every bit like legitimate title contenders in their decisive Game 6 victory over the Boston Celtics.

Instead, the New York Knicks and Indiana Pacers decided to play spoilers and find themselves with an opportunity to add to a longtime rivalry.

The Knicks came into the playoffs as the No. 3 seed in the East and did a number on the Detroit Pistons in the first round, and sent the second-seeded Boston Celtics out of the playoffs in the second...