Asuka Antonio "Aska" Cambridge is a Jamaican-born Japanese track and field sprinter who competes in the 100 metres and 200 metres. His personal best of 10.03 in the 100m gives him Japan's 6th fastest time. He is a two-time East Asian Games gold medallist and a relay bronze medallist at the World Junior Championships in Athletics. His mother is Japanese and his father is Jamaican.

The 2017 IAAF World Championships, the sixteenth edition of the IAAF World Championships, were held from 4 to 13 August at London Stadium in London, United Kingdom. London was officially awarded the championships on 11 November 2011.