The double-Olympic medalist's coach dismisses the doubters.
A handy reference guide for runners.
Former USATF CEO wants to give up the fight against doping.
Russian Natalia Volgina may be stripped of her Old Mutual Two Oceans Marathon title.
Alptekin's Turkish countrywoman Nevin Yanit is also suspected of cheating.
He did it thanks to a technicality.
One is a London Olympics silver medalist.
The two parties signed a 10-year deal 18 months ago.
The running community applauds these efforts.
A secret commission was set up in January to investigate doping among Kenyan athletes.