Multiple news outlets, commentators and even some players initially mistook the shouts of ‘Siu’ for boos, before eventually realizing what fans were actually shouting.
The chants have received mixed reviews from players, with home favorite Nick Kyrgios unsurprisingly relishing the boisterous support. After his opening round win over Liam Broady, the 26-year-old performed the ‘Siu’ celebration on court — much to the delight of the fans.
However, it’s fair to say Andy Murray wasn’t quite as into it.
“It’s painful stuff that,” the three-time grand slam winner said during his on-court interview as the sounds of ‘Siu’ echoed around the stands.
“I think it’s like ‘Siu’ or something, what Ronaldo does when he scores,” he added in his post-match press conference. “It was incredibly irritating.”
CNN has reached out to the Australian Open for comment, but tournament organizers were not immediately available to respond.