In Ray Bourque's mind there was only one No. 7 in Bruins history, and that belonged to Phil Esposito. So on the day the B's retired Espo's number in 1987, Bourque took the No. 7 sweater off his back and handed it over to the Boston legend, relinquishing the number to the player who helped lead the black and gold to two Stanley Cups in 1970 and 1972. To see one future Hall of Famer offer his jersey to another, check out the video below. To vote for Espo's No. 7 as Boston's Greatest Sports Moment, click here.  To see the entire bracket, click here. Share your thoughts about Boston's Greatest Sports Moment on Twitter at @NESN. Include #BGSM in your tweet.