Ernie Banks Released
Dec 1 Chicago Cubs release longtime star and future Hall of Famer Ernie Banks, ending his 19-year MLB career; announce Banks will serve as a coach on manager Leo Durocher's staff; Banks finishes with 512 home runs and 1,636 RBI
Frank Robinson
Dec 2 Frank Robinson is traded from the Baltimore Orioles to the Los Angeles Dodgers
Năstase's Perfect ATP
Dec 12 Romanian tennis star Ilie Năstase finishes ATP Masters Grand Prix with a perfect 6-0 record to win the rich season ending event at the Coubertin Stadium, Paris
- Dec 25 Longest game in NFL history as Miami Dolphins beat KC Chiefs, 27-24 in 2OT in AFL playoff game; duration: 82 minutes and 40 seconds
Ali vs. Blin
Dec 26 Muhammad Ali finishes off German Jürgen Blin with a thundering right cross for a 7th-round knockout in a non-title heavyweight boxing contest in Zurich, Switzerland
- Dec 27 1st Fiesta Bowl: #8 Arizona State beats Florida State, 45-38
Ballon d'Or
Dec 28 Ballon d'Or: Ajax forward Johan Cruyff wins award for best European football player ahead of Inter forward Sandro Mazzola and Manchester United winger George Best; first Dutch national and Ajax player to win award
- Dec 30 Long Island NHL franchise purchased (NY Islanders)