Summary
Top two athletes in each event guaranteed a place on GB team for Rio Olympics
Men's and women's 100m semi-finals and final taking place today
Former 400m hurdles world champion Dai Greene fails to qualify for final
Top two athletes in each event guaranteed a place on GB team for Rio Olympics
Men's and women's 100m semi-finals and final taking place today
Former 400m hurdles world champion Dai Greene fails to qualify for final