On this Day in Sports History February 21
NBA
On this day in 2011, the Denver Nuggets traded Carmelo Anthony, Chauncey Billups, Renaldo Balkman, Shelden Williams, and Anthony Carter to the New York Knicks for Raymond Felton, Danilo Gallinari, Wilson Chandler, Timofey Mozgov, $3 million in cash, and a 2014 first round draft pick. The Knicks also traded Eddy Curry, Anthony Randolph, and $3 million in cash to the Minnesota Timberwolves for Corey Brewer.
MLB
On this day in 1931, The Chicago White Sox and the New York Giants became the first major league teams to play a night game. The two teams met at Buffs Stadium in Houston, Texas. The exhibition game that lasted ten innings with the two teams combining for 23 hits.
On this day in 1968, Major League Baseball announces a minimum annual salary of $10,000.
NASCAR
On this day in 1948, the sport of NASCAR was incorporated, with the point system written on a bar napkin.