Assefa stuns the world with record-breaking run!

IMAGE: Ethiopia's Tigist Assefa crosses the finish line to win the women's Berlin Marathon. Photograph: Lisi Niesner/Reuters Ethiopia's Tigst Assefa shattered the women's marathon world record in......

Tirop and Teferi smash world records!

IMAGE: Agnes Tirop of Kenya celebrates winning the women's 10km in 30:01 at adidas HQ in Herzogenaurach, on Sunday. Photograph: Alexander Hassenstein/Getty Images for Adidas Two world records......