KAMPALA, Uganda (AP) -- Olympic and world marathon champion Stephen Kiprotich has a back injury that will need treatment before he defends his title at the world championships in Beijing in two months.
Kiprotich's manager, Jurrie van der Velden, says the runner will need to be assessed before returning to training. Van der Velden says he hopes the injury is "not that severe."
Kiprotich struggled with the back problem when he finished 10th at the Mattoni Olomouc half marathon in the Czech Republic last weekend.
However, his Uganda-based representative, Godfrey Nuwagaba, said the injury wasn't serious and Kiprotich would be fit for the worlds, which start Aug. 22.
Kiprotich won Uganda's first Olympic gold in 40 years at the 2012 London Games, then followed that up with victory at the 2013 worlds in Moscow.