Ukraine’s Marta Kostyuk said on Friday it “hurts a lot” to see Russian flags at the Australian Open despite the ban on them and was surprised by the lapse in security that allowed spectators to display the flags in and around Melbourne Park.

Novak Djokovic’s father Srdjan said earlier on Friday he would not attend his son’s semi-final against Tommy Paul after a video emerged showing him posing at Melbourne Park with fans holding Russian flags.

“It hurts a lot because there were specific rules, they were printed out outside that this is not allowed to bring flags,” Kostyuk told reporters after bowing out of the women’s doubles competition with Elena-Gabriela Ruse.

Aiming higher

American Tommy Paul’s run to the semi-finals will take him into the world’s top 20 for the first time but the 25-year-old does not want to stop there.

“I mean, great, great two weeks for me. Obviously got to carry it throughout the whole season. It’s about consistency. I don’t want to be a one-hit wonder,” Paul said.