Rita Jeptoo's agent speaks on his athlete's failed drug test and discusses the depth of Kenya's doping problem.
The Kenyan was tested in late September before defending her Chicago Marathon title.
Jeptoo is the first runner to win four consecutive Marathon Majors events. (c) 2014 Race Results Weekly, all rights reserved. Used with
The lineup for the October race includes reigning Boston Marathon champion Rita Jeptoo, along with American Amy Hastings.
The Ethiopian holds the 5,000m and 10,000m world records on the track.
Kenyans Geoffrey Kipsang and Rita Jeptoo won the men’s and women’s races in Colombia.
Jeptoo will chase history as she looks to break 2:20 for the third time.
Deksisa, Dibaba capture titles; Keflezighi leads hundreds under 1:30 mark.
The American is part of a fast field that will take part in Sunday's half marathon.