British athletes Anyika Onuora (L) and Perri Shakes-Drayton train with the new mixed 400-metre relay team at Todoroki stadium in Kawasaki on May 8, 2019. The new mixed 4x400m relay race, with teams of two men and two women, is poised to make its Olympic debut at Tokyo 2020 as part of a drive by organisers to make the sport more inclusive. (Photo by Charly Triballeau/AFP Photo)
