1904 - Boxing is added to the Olympic games in St. Louis.
1912 - Boxing is eliminated from the Olympics in Stockholm due to a law banning boxing in Sweden.
1920 - Boxing is added again to the Olympics in Antwerp.
2012 - Women's boxing makes its debut at the London Olympics.
1924 - Canoe/kayak flatwater racing is an exhibition event at the Olympics in Paris.
1936 - Men's canoe/kayak flatwater racing is added to the Olympics in Berlin.
1948 - Women's canoe/kayak flatwater racing is added to the Olympics in London.
1972 - Canoe/kayak slalom racing is added to the Olympics in Munich 1992 - Canoe/kayak slalom racing is a competition in the Olympics in Barcelona for the first time since 1972.
1896 - Cycling is part of the first modern Olympics in Athens. The two events are road race and track cycling.
1996 - Mountain bike racing debuts at the Atlanta Olympics.
2008 - Bicycle Moto Cross (BMX) debuts as an Olympic event, for both men and women.
1900 - Jumping is added to the Olympic game in Paris.
1912 - Dressage and Eventing are added to Jumping as the three areas of equestrian events at the Olympics in Stockholm.
1952 - Participation rules are changed to allow non-cavalry officers to compete in the Olympics.
1896 - Fencing is part of the first modern Olympics in Athens.