As Luke Kornet gets ready to don the San Antonio Spurs' black and silver in jersey No. 7, he couldn’t resist cracking a joke about the legendary big man who once wore No. 21 in San Antonio.

But, Duncan didn't wear No. 7—he famously sported No. 21, which has been retired by the Spurs franchise. Kornet explained the reasoning behind his choice, saying that he wants to be "one-third" of the player Duncan was during his NBA career. One-third of 21 is seven—very clever, Kornet.

Luke Kornet was one of San Antonio's top free agent additions this offseason, and he's already saying all the right things for the fan base.