The regular-season rivalry wasn't very much of a rivalry, as the Celtics won all four matchups. Boston won the first three games by 23, 27 and 13 points, respectively, before taking the final showdown, 119-117, in overtime back on April 8 in New York.

The Knicks and Pistons are still battling it out in the first round, but the Celtics at least know when they'll open their second round.

The Celtics will play the winner of the Knicks-Pistons series in the Eastern Conference semifinal beginning on Monday.