Danielson given four-year ban over positive sample from 2015

Two-time winner Tom Danielson (Cannondale-Garmin) hopes to repeat this year.

Two-time winner Tom Danielson (Cannondale-Garmin) hopes to repeat this year. (Image credit: Jonathan Devich/epicimages.us)

The US Anti-Doping Agency announced today that Tom Danielson has agreed to a four-year ban from competition after testing positive for a prohibited substance, his second anti-doping violation.