Etna - Australian Rohan Dennis pulled out of the Giro d'Italia during the fourth stage to the summit of Mount Etna in Sicily as he continued to suffer from injuries sustained in a crash.
Dennis's maiden Giro started in disastrous fashion, the BMC rider suffering injuries in a high-speed spill on stage three that left him with severe road rash and complaining of a sore head and neck.
Despite receiving physio on Monday's rest day, Dennis -- a former world record holder for track cycling's hour event -- failed to recover sufficiently to continue.
He started the 181km ride from Cefalu to Mount Etna, the first summit finish of the race.
But a message by BMC posted on their Twitter account three hours after the start said: "Unfortunately, @RohanDennis has been forced to abandon the race due to the effects of his stage 3 crash."
The Giro d'Italia, where Italy's Vincenzo Nibali (Bahrain) is the defending champion, began in Sardinia on May 5 and finishes in Milan on May 28.