Kerron Clement, of the United States, held off fast-finishing Kenyan Boniface Tumuti to win the men's Olympic 400 metres hurdles.
A nonchalant manner masking her lust for gold, the Russian pole vaulter stole centre stage at the world championships.
The 21-year-old ran a superb last 200 metres, clocking the year's quickest time of 47.61 seconds.
World champion Dafne Schippers was involved in a bizarre women's 200 metres at the Oslo Diamond League meeting on Thursday when the Dutchwoman false-started, was allowed to race and won, was then disqualified and finally reinstated.
LaShawn Merritt ran a blistering anchor leg to return the men's 4x400m title to the United States, and win his third Olympic gold medal, in the final athletics event of the Rio Games on Saturday.
Check out the gold medallists on Day 13 of the 2016 Olympic Games in Rio de Janeiro on Thursday:
The Nitro Series promised to make athletics a show and the sport's ultimate show-man Usain Bolt capped its first meeting in Melbourne on Saturday by propelling his team of international "All-Stars" to a crowd-pleasing win in the 4x100 metres relay.