In the thrilling men's 4x100 relays event at the world championships, a US disqualification sees China go from bronze to silver in a historic race.
Wayde van Niekerk becomes the first South African to win a world championship sprint title on Wednesday.
Two Kenyan female athletes competing at the 2015 IAAF World Championships were hit with a provisional suspension following positive samples provided ahead of the competitions.
This world title came in a tactical race for David Rudisha, so very unlike the wire-to-wire run at the London Olympics that earned him a gold medal and a world record in the 800 meters.
Boasting breakthrough performances on the world stage, a group of promising Chinese athletes have emerged to take the baton from retired Olympic champion hurdler Liu Xiang as the nation's new leaders on the athletics stage.
Sterling performances from a new generation of Chinese athletes has seen their market value surge. But they still have a way to go to fill the void left by Liu Xiang.
Chinese teenager Wang Jianan pulled off China's first ever world long jump medal at Beijing athletics world championships on Tuesday.
Africa 400m hurdle bronze medalist Nicholas Bett cemented his name in history to become the first Kenyan to win gold in sprints at the World Championships.
Jamaican runner Shelly-Ann Fraser-Pryce on Monday again became the world's fastest women by winning the 100-meter race at IAAF Beijing 2015.
China's growing appreciation of healthy lifestyles has seen long-distance running soar in popularity. Millions are now participating regularly, and host cities and businesses are looking to exploit a fast-growing new revenue stream, as Sun Xiaochen reports.
Eritrea's Ghirmay Ghebreslassie celebrates winning the final of the men's marathon athletics event at the 2015 IAAF World Championships at the the National Stadium, also known as "Bird's Nest", in Beijing on Aug 22, 2015.
Jamaica's Usain Bolt clocked 9.79 seconds to win the men's 100m gold medal at the world athletics championships on Sunday.