The shot put was a sporting event.
Winifred Bambera participated in shot put before joining UNIT. (AUDIO: The Frequency)
The shot put was part of the Olympic Games by 2012. According to the Tenth Doctor, Papua New Guinea surprised everyone in the events in the London 2012 Olympic Games. (TV: Fear Her)
Behind the scenes
In the real world, Papua New Guinea have yet to win an Olympic medal and did not participate in this sport.