The Celtics will be coming off six full days of rest heading into the second round series after beating the Orlando Magic 4-1 in their first round series that wrapped up on Tuesday. The Knicks will have three days off before heading to Boston after beating the Pistons 4-2 in their series with a clincher on Thursday night in Detroit.

Let's take a look back at the Boston Celtics' NBA championships. The Celtics celebrate after winning the 2008 NBA Finals. The Boston Celtics banked the first of their NBA-leading 18 titles in the 1957 season.

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.