Hello; I was wondering if any tennis players really care about the outcome of flipping the coin before the match. I'm guessing some players like Karlovic might like to always serve first, for example. In fact, the chance of getting a head if the coin starts on a head is 51/100 - in other words, if they choose whatever face the coin is currently on (facing up), they have a 51/100 chance of it being that face when it lands. Do you think any players do this? I am thinking of writing to Federer about this to give him an advantage in his future matches.