US Anti-Doping Agency admits to confusion over Chris Horner's missed test

Horner and Busche, Vuelta a Espana 2013, stage 21

The US Anti-Doping Agency (USADA) has said that a confusion over an address led to Chris Horner missing an anti-doping control on Monday, the day after winning the Vuelta a España. Testing authorities were unable to locate Horner in the early hours in Madrid, but it was due to a delayed communication of Horner's new whereabouts.

In a statement shared with Cycling Weekly, USADA said: "Horner properly updated his whereabouts information in advance of the test attempt, but given that the information was received in the US, the [Spain's anti-doping officer] did not receive the updated information prior to arriving at the hotel."

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Gregor Brown

Gregor Brown is an experienced cycling journalist, based in Florence, Italy. He has covered races all over the world for over a decade - following the Giro, Tour de France, and every major race since 2006. His love of cycling began with freestyle and BMX, before the 1998 Tour de France led him to a deep appreciation of the road racing season.