Team Sky duo John Lee Augustyn and Ben Swift have been forced to pull out of the Tour of Spain because of a sickness bug.
The mystery illness struck the two riders down during the third stage of the event.
"John Lee Augustyn and Ben Swift both pulled out because they could not continue as they were so sick," said team principal Dave Brailsford. "Another three, Simon Gerrans, Ian Stannard and Pete Kennaugh are all really bad.
"It's basically they can't stop vomiting but we don't think it's food poisoning.
"We've got our own chef and the riders and staff eat separately and we're always very vigilant about hygiene."