Tennis became an Olympic event the year of 1896
Curling was introduced as an official Olympic sport in 1998 in the Nagano Olympics.
Soccer was introduced in the Olympic Games in 1990.
Golf was introduced into the Olympics in 1900. The 1904 Games were the last time golf was contested.
Indoor volleyball has been an Olympic sport since the 1964 Games in Tokyo, Japan.
Tennis is a year-long sport, there are no seasons.
Mens hockey became an olympic sport in 1920
1998
golf is not in the olympic sport so wrong question sorry
1970
Tennis returned as a medal sport at the Olympics in 1988, 68 years after it had last been featured as such. The previous Olympics in 1984, and also in 1968, featured it as a demonstration sport only.
Yes, it's "America's Pastime" and was invented by Abner Doubleday in an unremembered late 19th century year.