The Belgian rider Kris Boeckmans was in an induced coma after sustaining a concussion and facial fractures in a crash during the eighth stage of the Vuelta a España on Saturday.
Tejay van Garderen of the United States broke his shoulder in the crash and withdrew from the race.
Jasper Stuyven of Belgium won a sprint finish by a bike length to claim the 113.4-mile stage in 4 hours 6 minutes, and Esteban Chaves retained the leader’s jersey.