Olympic champion Emmanuel Wanyonyi added the world crown to his laurels with a hard-fought victory in the men's 800m in Tokyo on Saturday.
Wanyonyi timed a championship record of 1min 41.86sec for gold, just four hundredths of a second ahead of Algeria's Djamel Sedjati while defending champion Marco Arop of Canada had to settle for bronze in 1:41.95.