Earlier this week, the International Olympic Committee announced the addition of five sports to the 2020 Olympics in Tokyo — baseball, softball, karate, skateboarding, climbing and surfing. Surfing’s Tyler Wright was beyond stoked, but others were less enthused about the IOC’s attempts at “bringing the Games to young people.”
But concern trolling over the fidelity of the Olympics’ roster of sports overlooks just how capricious the traditional selection process has been. The 2016 games in Rio already feature a record 42 sport disciplines — rugby and golf are the newcomers this year — that make up more than 300 events. Both rugby and golf were part of the the 1900 Olympics in Paris — the second modern summer games — but by 1908 golf was out and rugby followed shortly thereafter. Other sports like basketball and boxing were added in subsequent years, but by the 1988 games in Seoul, South Korea, far more obscure sports like synchronized swimming, taekwondo and rhythmic gymnastics were on the Olympic docket, decades before golf and rugby would return.
Each Olympic cycle the executive board of the International Olympic Committee votes to add sports that have petitioned to be included based on criteria like “TV ratings, ticket sales, anti-doping policy and global participation and popularity,” according to ESPN. This can be an unscientific thing, as was made clear in 2013, when the board voted to drop wrestling from the 2020 Olympics and then reversed that decision and reinstated it just a few months later.
Taken altogether, the weird blips in Olympic history become even more apparent — like the absence of soccer in 1932, or the decades-long tennis hiatus from 1928 to 1964. Below, a look at all of the sports that will be played in 2016 as they’ve come and gone throughout modern Olympics history.1
CLARIFICATION (Aug. 4, 5:33 p.m.): The chart in this post shows only sports included in the 2016 Olympic Games, not those that will be added in 2020 or those that were played in previous games but discontinued.