Is he definitely rider 15? Only USADA know that for certain. But if he is, then that would explain the spike.
On the other hand, there is a belief amongst some that Horner left the European scene to return to the US domestic scene in the early noughties because he didn't want to get involved in doping. How true that is I don't know. He returned in 2005 with Saunier-Duval which rather undermines this theory as it was pre-Puerto and Gianetti's teams are notoriously dirty.
Is he definitely rider 15? Only USADA know that for certain. But if he is, then that would explain the spike.
On the other hand, there is a belief amongst some that Horner left the European scene to return to the US domestic scene in the early noughties because he didn't want to get involved in doping. How true that is I don't know. He returned in 2005 with Saunier-Duval which rather undermines this theory as it was pre-Puerto and Gianetti's teams are notoriously dirty.