The United States Anti-Doping Agency is preparing to reveal its evidence against Lance Armstrong.
Usada has banned the American cyclist for life, stripping him of his record-breaking seven Tour de France titles.
Armstrong says he is innocent and that only the sport's governing body, the International Cycling Union (UCI), has the power to sanction him.
With the UCI giving the impression that it agrees with Armstrong, Usada is under pressure to provide more details of its case.
It is understood that Usada would have done so already but for two reasons. Firstly, Armstrong (pictured) was charged along with three doctors, a coach, and US Postal team manager Johan Bruyneel in June – and proceedings are continuing against three of them. Secondly, they are concerned that its witnesses have to be protected from outside influence.
In the Tour of Spain, Britain's Steven Cummings yesterday won stage 13 from Santiago de Compostela to Ferrol. Australia's Cameron Meyer finished second with Spain's Juan Antonio Flecha in third. Spain's Joaquim Rodriguez and Alberto Contador are respectively first and second overall, with Britain's Chris Froome third.