All sports matches taking place in Italy on Sunday will observe a minute's silence in honour of MotoGP star Marco Simoncelli who died following an accident at the Malaysian Grand Prix.
Italian Olympic Committee (Coni) president Gianni Petrucci announced the measure soon after Simoncelli was pronounced dead at the Sepang track.
Italian football giants Inter and AC Milan were amongst the first sports clubs to offer their commiserations.
"AC Milan offers a hug to the family of Marco, a huge rossonero fan, and we want to offer the most sincere and heartfelt condolences in this sad moment," said a Milan statement on their website.
Inter added: "The president Massimo Moratti and everyone at Inter Milan, together with (coach) Claudio Ranieri and the team, shares in the pain of the Italian sports world and indeed the sports world for the loss of the rider Marco Simoncelli.
"Remembering a young and passionate champion Inter offers a hug to the family and friends of Marco Simoncelli."