The American women's sprint relay quartet pulled off a stunning upset over Jamaica at the World Championships on Saturday while a flubbed baton handover proved costly for the US men's team as they finished second to Canada.
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Jamaica were anchored by new 200 metres champion Shericka Jackson but Twanisha Terry ran a terrific final leg to bring home the hosts' 10th gold medal in Eugene. Read full story
"It's just an amazing feeling," Terry said. "The race was electrifying. The stadium went crazy."
Germany took a surprise third-placed finish after Britain's Dina Asher-Smith pulled up injured.
The United States had looked set to retain the men's title until Elijah Hall and Marvin Bracy lost time with a slow exchange, the latest disappointment for a country with incredible depth of sprinting talent. Read full story
Andre De Grasse, the Olympic 200m champion, beat Bracy to the finish line while Britain collected bronze.
"It's special to win here. There are many Canadians cheering us on. It's not on home soil, but it felt like it," De Grasse said.
Portugal's Pedro Pichardo (triple jump) and Kenyan Emmanuel Korir (800m) added world titles to their Olympic crowns but Canada's Damian Warner, also a gold medallist in Tokyo, suffered injury heartbreak in the decathlon.
Pichardo jumped a world-leading 17.95m to take gold ahead of Burkina Faso's Hugues Fabrice Zango and China's Olympic silver medallist Zhu Yaming. Read full story
Korir produced his trademark devastating kick to clinch the 800m title with Algerian Djamel Sedjati taking a surprise silver ahead of Canada's Marco Arop. Read full story
Warner was in firm control of the decathlon after the first four events but his hopes of winning a first world title were dashed after an injury in the 400m, with Puerto Rico's Ayden Owens-Delerme moving into the overall lead. Read full story
Anderson Peters of Grenada beat Olympic champion Neeraj Chopra to retain his javelin title with a throw of 90.54m, with Czech Republic's Jakub Vadlejch third. Read full story
Ethiopia's Gudaf Tsegay charged down the final straight to win the women's 5 000 metres while world record holder Letesenbet Gidey and Olympic champion Sifan Hassan missed out on a podium finish. Read full story
Allyson Felix helped the US women's 4x400m relay team qualify for the finals as they finished with the fastest time of the heats. Read full story
Their male counterparts, winners of seven of the past eight world titles and eight of the past 10 Olympic golds, also cruised into the finals, which will take place on the last day of the championships on Sunday.