The 2017 NBA Finals begin Thursday night with the Golden State Warriors and Clevleand Cavaliers meeting for the third-straight year with the title on the line. That's the first time such a thing has ever happened in NBA history and only the fourth time it's happened in the history of professional team sports. (The last occuring in 1956, when leagues were far smaller and the odds of such meetings were greater.)
That doesn't mean sports hasn't treated us to some great trilogies, however. Here's a list of the greatest threequels in sports history - one that Cavs-Dubs is sure to join seven games from now.