New Team Sky signing Kristoffer Halvorsen will miss this week's Tour Down Under after breaking his hand in a fall on Sunday.
Halvorsen was bidding to contest the final sprint in the People's Choice Classic in Adelaide, the 50.6km race which precedes the first WorldTour race of 2018.
Although the young Norwegian did not go down heavily, his right side bounced off the barriers on a number of occasions as he tried to stay up and later scans showed a fracture.
Team doctor Richard Usher said: "Kristoffer was taken to hospital after the stage and, unfortunately, it's been confirmed that he has fractured a bone in his right hand, so he won't be able to race in the Tour Down Under.
"The next step will be to consult with the specialists and ensure we manage the injury properly."
The race was due to be Halvorsen's WorldTour debut with Team Sky, who he joined last year after an impressive set of results with ProContinental outfit Team Joker.
Fellow debutant Chris Lawless was the best Team Sky finisher in the reduced bunch sprint, coming home in sixth behind world champion Peter Sagan.
Sagan came out on top of a battle of the peloton's sprint stars, with Andre Greipel finishing second and home favourite Caleb Ewan coming in third.