The UCI race jury says the "exceptional circumstances" prevented it from disqualifying the American from the race.
Australia's Santos Tour Down Under has become the standard of what a professional bike race should be, writes Andrew Hood.
Organizers, fans, and riders want the Tour Down Under to stay in January, but the UCI is considering other options
Results from the final stage of the 2015 Santos Tour Down Under
Photos from the final stage of the 2015 Santos Tour Down Under, a circuit race through the streets of Adelaide
Rohan Dennis stays out of trouble on the final circuit race through Adelaide to head an all-Australian podium at the Santos Tour Under
Results from stage 5 of the 2015 Santos Tour Down Under
Richie Porte had his go on Willunga Hill, chasing the stage win and the leader's jersey, and we were there
Richie Porte made his move on the second and final climb to win the stage, but Rohan Dennis fought back to hold the leader's jersey
Steele Von Hoff takes sprint favorites to the mat in a stage 4 finale marred by a major crash. Rohan Dennis keeps the leader's jersey