Yarraji clocked 13.05 seconds -- well below her national record of 12.78s -- to finish seventh in heats
Antonio Watson won a thrilling World Championship 400 metres gold on Thursday.
The New Zealand Olympic Committee said its athletes had been preparing for a scenario where there were no fans present.
Brianna Rollins of the United States won the 100 metres hurdles gold in a time of 12.48 seconds on Wednesday, leading compatriots Nia Ali and Kristi Castlin in the event's first ever Olympic podium sweep.
It will be the end of an era for athletics on Saturday when Usain Bolt races for the last time in the men's 4x100 metres relay at the World Championships.
Jamaican sprinter Usain Bolt, who is set to retire after the World Championships in London next year, has been shortlisted for the 2016 IAAF World Athletes of the Year award.
The Italian and Japanese battled shoulder-to-shoulder as the leading pair in the final 4km, but the Italian coped well with the pressure and accelerated in the final 300m to seal the gold medal.
Valerie Adams chalks up another medal for the mums.
Compatriot Ronnie Baker, who had set the previous fastest 100m of the year nine days ago, was second in 9.93 seconds, with Jamaica's Yohan Blake third a further hundredth of a second back.
Sifan Hassan of the Netherlands broke the 23-year-old women's mile world record on Friday when she clocked four minutes 12.33 seconds in a race dedicated to former American runner Gabe Grunewald, who died from cancer last month at the age of 32.
Puerto Rico's Jasmine Camacho-Quinn capped a dazzling performance in the 100 metres hurdles at the Tokyo Olympics with a gold medal while Miltiadis Tentoglou of Greece won the men's long jump title in an action packed Monday morning at the Olympic Stadium
A round-up of results from the final day of the World Athletics Championships in Doha on Sunday
A summary of sports events and persons who made news on Sunday
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