armstrong-injured-collarbone
Photo: Rafa Gomez/Ciclismo a Fondo, via Reuters

Lance Armstrong broke his right collarbone during a cycling crash in Spain. The injury threatens his opportunity to compete in the Tour de France in July and also the Giro d’Italia in May.

This probably explains his lack of updates on Twitter today. Hope he heals in time to compete!

UPDATE: Cyclelicious has a link to video news coverage of Armstrong’s crash.