Unlike many of his matches, Nick Kyrgios's fourth-round win over Brandon Nakashima was without controversy at Wimbledon.
But one eagle-eyed reporter pointed out his non-playing on-court attire was in breach of Wimbledon's strict and often-criticised dress code.
The clothing and apparel rules for players, including practice, at Wimbledon state: "Competitors must be dressed in suitable tennis attire that is almost entirely white and this applies from the point at which the player enters the court surround."
The rules go as far as governing the colour underwear players can wear and often becomes the source of some sort of controversy.
It was only recently that the rules even allowed for 1-centimetre-wide coloured piping on clothing, and some players were allowed a small splash of blue and yellow to show support for Ukraine at this year's championships.
Kyrgios's playing attire adheres to the rules, but the Australian quarter-finalist switches into red and white Air Jordan 1 sneakers and a red Jordan Brand cap when entering the court and after the match.
Kyrgios is sponsored by Nike, which owns Jordan Brand.
A reporter suggested tournament officials would be speaking to the world number 40 and asked him after he reached the quarter-finals why he was breaking the rules.
Although he did cop to changing his ways slightly, pledging to "wear some triple-whites" for his next outing, he did not appear impressed with the line of questioning.
"That's more attention for me. What's that saying; any publicity's good publicity, right? Keep doing you then, champion," he said with a wink.
