By Kameron Duncan Christmas Day is usually reserved for opening presents and spending time with family, but it’s become an increasingly popular sports day on the annual calendar over the years. The NBA, NFL and college football have had their fair share of memorable moments on December 25. Here are the five best Christmas Day moments in sports history. We’ll begin with the NBA, which has had the richest Christmas Day history of the major American sports. If Thanksgiving is for the NFL and the Fourth of July is for MLB, Christmas Day is synonymous with the NBA. Fans were treated to a rematch of…