Wimbledon is famous for it's all-white attire for all of the competitors.
That is by design. Wimbledon has a strict dress code, and many player's have fallen foul of Wimbledon's rules. Roger Federer was forced to change his white shoes once because the soles were yellow.
Just this year, last year's runner-up Eugenie Bouchard narrowly avoided a violation after an umpire noticed her black bra strap was showing.
The tournaments rules state that:
Any undergarments that either are or can be visible during play (including due to perspiration) must also be completely white.
Now it seems that even Wimbledon merchandise violates their own regulations:
In his third round match with seventh seed Milos Raonic, Australian Nick Kyrgios was feeling the heat and got an official Wimbledon headband during the second set.
He managed to play a few games with the headband the way it was, but the umpire then advised him that the headband was contrary to the official Wimbledon dress code, and he was made to turn it inside out.
In his post-match press conference, Krygios confirmed that he wasn't allowed wear the headband the right way around, but that it didn't bother him.
Kyrgios peppered with more headband questions later & confirms he was instructed to turn it inside out pic.twitter.com/rHiWMNNEcW
— Mark Masters (@markhmasters) July 3, 2015
The headband didn't phase him, given that he won all three sets played with the headband, and lost the one played without.
The 20-year-old is definitely one to watch in the coming rounds.