Four-time Olympic gold medallist Sir Chris Hoy has been forced to withdraw from the track cycling's European Championships with a chest infection.
The 35-year-old will now miss today's individual sprint race and tomorrow's keirin event.
"Chris got up not feeling well. He was dizzy in the warm-up and after a doctor's exam we decided to withdraw him," said GB coach Shane Sutton.
"He'll be disappointed. He was looking forward to the run-out here."
Despite suffering with an illness, Hoy had qualified fourth-fastest in the individual sprint during this morning's opening session before deciding to pull out.