Athletes at the Rio Olympics must sever ties with all non official Games sponsors while competing and adhere to strict social media guidelines or risk sanctions and possible disqualification.
A bylaw of the Olympic Charter, which states the series of complex rules, is nothing new but just days after they failed to ban the Russian team from Rio following the revelation of the country's state-sponsored doping programme, some of its contents are a further potential embarrassment to the International Olympic Committee.
Known as 'Rule 40', the bylaw is designed to protect the intellectual property of official Olympic sponsors such as Coca-Cola, McDonalds and Panasonic who have paid significant sums of money to be associated with the Games. It states only approved Olympic sponsors can refer to what they call 'Olympic-related terms' between July 27 and August 24.
The IOC say 'Olympic-related terms' include the words 'Rio', 'gold', 'silver', 'bronze', 'medal' and even 'victory'.
While non-official Olympic partners have been warned over using such terms on social media, sporting brands in the same category have also been told they must not pass on messages of good luck to their athletes competing in Rio.