Ugandan outsprints Kipchoge takes men's 5,000 meters.
Treatment may be contributing to back condition.
South African star succumbs to undisclosed back injury.
Recent back troubles may keep reigning 800-meter world champion Caster Semenya out of next week's Commonwealth Games, says her coach,
Great Britain’s sub-13:00 5,000-meter man decides to end to his successful season. Written by: David Monti (c) 2010 Race Results
The new 800-meter world-record holder is tired after a long season. Citing fatigue, Kenya’s David Rudisha has decided not to compete
Reigning world champion returns to site of last year’s record-setting performance. Caster Semenya says she wants to put the past year