Philadelphia 76ers vs. Boston Celtics Game 7s: A look at the history of a rivalry

It's fitting that Philadelphia and Boston are facing off in a Game 7 on Sunday — no two franchises have faced each other more Game 7s than these two. This will be the ninth time in a rivalry that dates back to 1959. It's not just head-to-head, these teams are in a lot of Game 7s, period.

The Celtics have the most Game 7 wins all-time (27) while the 76ers have the most Game 7 losses (12). Sunday will be a record ninth Game 7 between these franchises, with Boston leading 6-2 heading into this season. Here's a quick look at the history of these games.

1959 Eastern Conference Finals How long ago was this? It was the year the Barbie Doll was first released, and Disney's "Sleeping Beauty" first hit theaters. It was so long ago that the 76ers were the Syracuse Nationals.

Boston came from eight down at the half to win 130-125, behind 18 points and 32 rebounds from Bill Russell, while Bob Cousy had 25 points, 10 assists and seven rebounds. 1965 Eastern Conference Finals This game is legendary among Celtics faithful. Boston was up one with five seconds left, but Philadelphia was inbounding the ball and had a chance.