How is IAAF still letting this guy coach. The most recent bust: 19 year old Ekaterina Medvedeva, the 2012 World Junior Champion.
From Russia:
http://www.rusada.ru/en/press/news/three-russian-track-and-field-athletes-recognized-ineligible-0
Aussie Jared Tallent beaten by a different Russian in the past four major championships:
http://www.smh.com.au/sport/athletics/tallent-wary-of-absent-russians-20130813-2rurq.html
Two of Chegin's athletes, 2008 Olympic Champion Valery Borchin and former and current world record holder's Vladimir Kanykin and Sergei Morozov have served bans and the women's side with Olimpiada Ivanova, Olympic Silver medalist and former world record holder, along with U-23 champion Tatyana Mineyeva.
http://grg51.typepad.com/steroid_nation/2008/08/was-olympic-rac.html
Certainly not a low profile list especially considering 2008/2012 Olympic Gold medalists/ World Record Holder's Olga Kaniskina and Elena Lashmanovaare part of the group.