Michezo ya Raidha Duniani Bejing 2015

Kenya's Vivian Jepkemoi Cheruiyot celebrates after winning the gold medal in the women’s 10,000m final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015

Kenya's Ezekiel Kemboi celebrates as he wins the men's 3000m steeplechase final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015.

Trinidad and Tobago's Kelly-Ann Baptiste , left, collides with United States' Tori Bowie and Jamaica's Natasha Morrison, right, after their women's 100m semifinal at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24

Kenya's Vivian Jepkemoi Cheruiyot reacts after winning the women’s 10,000m final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015.

Cuba's Maykel D. Masso competes in men's long jump qualification at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015

Britain's Mo Farah celebrates after winning the gold medal in the men's 10,000m final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Saturday, Aug. 22, 2015

Britain's Mo Farah, center, with his gold medal, poses with Kenya's Geoffrey Kipsang Kamworor, left, and Kenya's Paul Kipngetich Tanui on the podium of the men's 10000m at the World Athletics Championships at the Bird's Nest stadium in Beijing, Sunday, Aug. 23, 2015

Ethiopia's Mohammed Aman, right, France's Pierre-Ambroise Bosse, center, and United States' Clayton Murphy compete in round one of the men’s 800m World Athletic Championships at the Bird's Nest stadium in Beijing, Saturday, Aug. 22, 2015

Jamaica's Rusheen McDonald starts in a men’s 400m semifinal at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015

Ethiopia's Hiwot Ayalew leads the filed through the water jump during heat one of the women’s 3000m steeplechase at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015.

Colombia's Caterine Ibarguen celebrates after winning the gold in the women’s triple jump final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015.

United States' Evan Jager competes in the men’s 3000m steeplechase final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015

United States' Justin Gatlin, centre, races in a men's 100m semifinal at the World Athletics Championships at the Bird's Nest stadium in Beijing, Sunday, Aug. 23, 2015.

Eritrea's Ghirmay Ghebreslassie reaches out to the crowd after winning the gold medal in the men's marathon at the World Athletics Championships at the Bird's Nest stadium in Beijing, Saturday, Aug. 22, 2015

China Athletics Worlds

Team North Korea practice under coach supervision during Synchro – 17th FINA World Aquatics Championships in Budapest, Hungary.

Gold medalist Jamaica's Usain Bolt, right, stands with silver medalist Justin Gatlin of the United States during the medal ceremony for the men’s 100m final at the World Athletics Championships at the Bird's Nest stadium in Beijing, Monday, Aug. 24, 2015.

Eritrea's Ghirmay Ghebreslassie celebrates after winning the men’s marathon at the World Athletic Championships at the Bird's Nest stadium in Beijing, Saturday, Aug. 22, 2015.