A celebratory cry made famous by the footballer Cristiano Ronaldo has caused confusion and a degree of annoyance among tennis players and on-lookers alike, with shouts of “siuuu” heard from the stands at this year’s Australian Open.
The cheer, which fans utter in an elongated deep tone, causing it to sound like a boo, was omnipresent during the opening two days of play at Melbourne Park, leaving some players uncertain about their popularity with the often boisterous Open crowds.
