Kaden Groves, Australia's best sprint hope for a stage win at the Giro d"Italia, has been forced to quit on the fourth stage as a result of injuries suffered on day one.
He follows another Australian star, Jay Vine, who was invalided out after suffering concussion and a broken elbow when crashing on stage two.
Groves was among several riders injured in a mass crash 600 metres from the line as the race opened in Bulgaria on Friday.
