Mens hockey became an olympic sport in 1920
It became an Olympic sport in1964.
Softball's first year as an Olympic sport was 1996. Unfortunately, softball is being dropped as an Olympic sport after the 2008 Games in Beijing.
1900 paris summer olympics.
Beach volleyball had its Olympic debut at the 1996 Atlanta Games.
1998 Nagano Winter Games
Swimming became an Olympic sport in the 1896 Summer Olympics. It was hosted in Athens, Greece, and 241 athletes took part in the games.