Arch rival Ethiopia already lags well behind in the medal count.
Historic sweeps by Kenyan women in the marathon and the 10,000m.
WMM contenders Gebremariam, Kiplagat lead respective fields in Daegu, Korea.
Olympic medalists Bernard Lagat and Shalane Flanagan headline the U.S. contingent in Korea.
He's suffering from a nagging hamstring injury.
He is searching for his fifth world title in the 10,000m.
The American 10,000m record holder is confident of her chances.
Kiplagat, Choge have shown excellent form lately.
The Villanova graduate will be giving the 26.2-mile race a shot in November.
The 22-year-old middle-distance runner thinks he's ready.