(Yeah, I coulda picked the English one, but attitude sounds so much classier in a foreign language. It also needs no interpretation.)
Couple thoughts on this. First, while I believe that Genie Bouchard is not all of that, it is also about time that someone challenged this "tennis is polite" norm nonsense. Because as all of us who actually play tennis know, there is not a whole lot polite about the grind of the game. When you shake hands with your opponent and you say "good match," do you not mentally add "for ME!" Why is tennis the only sport where you have to be quiet and polite to your opponent when you certainly don't want to be? Bouchard's refusal to bow to the polite quo (just made that up, thanks) hopefully will open the door to tennis being like other sports, where you're allowed to want to win. Now, if we could just get rid of players walking into a big match hand-in-hand with a little kid, that would be good.
I said couple thoughts. The other one is that if you're going to create a maelstrom by not shaking an opponent's hand, it would be helpful to go ahead and also win the match. Otherwise, this happens: