Diamond League Oslo: Teenager Cooper Lutkenhaus stuns Olympic champion Emmanuel Wanyonyi in 800m

American 17-year-old Cooper Lutkenhaus stunned Olympic 800m champion Emmanuel Wanyonyi at the Diamond League meeting in Oslo, Norway. Lutkenhaus, who only left high school last month, set a personal best of 1 minute 42.08 seconds to edge out the Kenyan by just one hundredth of a second. Wanyonyi ran his fastest time of the season (1:42.09) but was narrowly beaten in the closest of finishes.