RIO DE JANEIRO (AP) — The Latest on the 2016 Summer Olympics being held in Rio de Janeiro (all times local):
5:35 a.m.
Usain Bolt, no slouch himself on the track, says it's going to be hard to pick a favorite in the women's 100 meters at the Rio Olympics.
Olympic track and field events are starting Friday, including preliminary heats in the women's 100 meters.
Five sprinters at Rio have joined the small list of women to crack the 10.8-second mark: Elaine Thompson of Jamaica, Murielle Ahoure of the Ivory Coast and American teammates English Gardner, Tianna Bartoletta and Tori Bowie.