Kenya's world half-marathon champion and African 10,000 metres champion Wilson Kiprop has dropped out of the east African nation's team for the world championships in Daegu, South Korea this month, because of injury.
His place has been taken by Paul Kipngetich Tanui, who won a silver medal at the world cross country championships in Spain, in March.
Tanui finished fifth at last month's national championships, which served as qualifying for the world championships starting on August 27th.
Tanui joins Peter Kirui and Martin Mathathi, who were first and third respectively in the national championships.