Rui Costa wins 19th stage of Tour de France . Second stage win of this year 's race for Portuguese rider . Chris Froome maintains big lead in overall race standings . Seven riders -- including Damiano Cunego -- convicted in Italy of criminal offences .
Rui Costa wins 19th stage of Tour de France . Second stage win of this year 's race for Movistar rider . Chris Froome maintains big lead in overall race standings . Lampre riders -- including Damiano Cunego -- charged in Italy of doping offences .