Mary Keitany's training partner put forth a solid effort in the Czech capital.
It was his second victory there.
American Ryan Hall is fourth in 2:04:58.
Mutai breaks men's course record as Keitany runs away with women's race.
It was the first sub-1 hour half on Czech soil.
He is arguably one of the best ultra runners in the world currently.
Even with a bathroom break, the winner ran the fastest time in the world this year.
The wind was a factor in the IAAF gold-label marathon in China.
Kipsang breaks 2:05 barrier to win the overall title.
London, Boston winners to challenge defending champion Wanjiru. Written by: David Monti (c) 2010 Race Results Weekly, all rights reserved.