As he hits the ground, Ronaldo outstretches his arms and bellows 'Siuuu', which is Spanish for 'yes', with fans often joining in to create a booming noise around the stadium. 3. His teammates now often join in with the 'siu'Credit: Getty.

bwin also lent its name to the Primeira Liga (bwinLIGA), sponsored Italian football club Milan from 2006 to 2010, and has also been a partner to popular football clubs, such as Real Madrid, Juventus and Werder Bremen.