RIO DE JANEIRO (AP) — The Latest on the 2016 Summer Olympics in Rio de Janeiro (all times local):
12:50 p.m.
Nicholas Bett, who won a surprising world title in the 400-meter hurdles last year, has been disqualified in the first round at the Olympics.
The 26-year-old Kenyan was contending for the lead in heat 5 when he crashed into the 10th and last hurdle. He stumbled and crossed the finish in last spot, and was later disqualified. Michael Tinsley, the Olympic silver medalist in 2012, also failed to qualify after placing fifth in the last heat.