(*That actually reminds me: a cousin of mine drove a truck for a local Pepsi distributor and once got reemed out by his supervisor for carrying a bottle of Dasani (a Coca-Cola product) while on the job. For example: if, say, Pepsi sponsored an event then I doubt they'd want Coca-Cola products visible in the playing hall*, but that wouldn't necessarily restrict a player from drinking Coka out of a non-branded container.
Depending on the event and the sponsorship there might be specific conditions restricting what's visible to the spectators and viewers. Nakamura, of course, is sponsored by Red Bull, so he's always got a can of that sitting next to him (even if you never actually see him drink from it until after the game is finished).īut no, there's no particular rules governing that a player must or cannot drink anything in particular.
I'm pretty sure the Anglo-Norwegian company Isklar sponsors a lot of these events, which is probably why you see their bottles sitting on all the tables at so many.