| 15/12/2021 | 33-year-old Sergio Aguero announces the end of his career with 427 goals in 786 games in Camp Nou, just after six months after joining Barcelona, in order to protect his health. The former Manchester City striker was taken to hospital on 30 October after experiencing "chest discomfort" during a 1-1 draw with Alaves. |
| 15/12/2020 | Stratos Molivas dies from a heart attack aged 82. He was a track & field athlete and president of SEGAS from 1987 until 1997. |
| 15/12/1998 | Long jump champion Douglas De Souza and triple jump athlete Gustavo Lima Pinto die in a car accident |
| 15/12/1995 | The “Jean Marc Bosman Case” changes European sports arena. The rules relating to the transfer of players and the limitation on the number of community players in matches between clubs have been declared illegal in an awaited ruling by the Court of Justice. The restrictions imposed by the UEFA as to the number of foreign players allowed to be ligned up on a team is contrary to the rules relative to the free circulation of workers in the European Union. The exclusion of foreign players is justifiable only when it concerns the composition of nationals teams, in accordance with the ruling given by the Court in 1976. Manolis Mavromatis translates in greek the essay titled “Revolution in European Sports” |
| 15/12/1992 | ''Sports Illustrated'' names Arhur Ashe ''Athlete of the Year'' |
| 15/12/1973 | Sandy Hawley becomes the first jockey to win 500 races in a year |
| 15/12/1971 | Panathinaikos face Nacional Montevideo for the Intercontinental Cup replacing European Champion Ajax. The match in Athens ends in a draw (1-1). Giannis Tomaras is seriously injured and is forced to quit football. Nacional will win the cup after defeating Panathinaikos 2-1 in Montevideo on December 29, 1971 |
| 15/12/1962 | Bob Cousy of the Boston Celtics scores with his 5.926th shot. He was NBA's MVP in 1957. He also holds NBA record for most free throws made (30/30, Boston Celtics - Syracuse Nationals 111-105 in 4 overtimes) |
| 15/12/1933 | First cricket test match held in India - England win |
| 15/12/1925 | The new Madison Square Garden opens with a hockey game. Montreal Canadiens - NY Americans 3-1 |