She received a further doping suspension of two years after a failed test for dimethylpentylamine in July 2011.
The morale of the team was seriously affected by Diego Maradona's doping suspension.
Floyd Landis, with his doping suspension ended, joined the team this year.
At least six of Graham's other athletes have served doping suspensions.
He missed the 1996 and 1997 seasons, due to a doping suspension.
Six other runners he coached have served or are serving doping suspensions.
He returned from the doping suspension to compete at the 1995 World Championships, but failed to qualify for the final round there.
He received a lifetime ban from athletics after testing positive for banned substances in 2011, having already served a two-year doping suspension from 2006.
From 2007 until his doping suspension in 2010 he played for Red Star Belgrade.
Later on he received yet another doping suspension due to abuse of illegal substances.