While every athlete learns the importance of sportsmanship at an early age, as they get older and become famous at the professional level, that notion can be tossed out the window.
Over the years, we've seen some famous feuds in sports that make fans think, "Do these guys really hate each other that much?"
If you're asking that question in the first place, then the answer is almost always "yes." And to prove how much they really despise each other, we're giving you some examples of players who truly can't stand one another.
Interesting interview by El Pais to Garbine Muguruza. The Spaniard spoke about many different arguments: from her 2015 season to the lack of friendship on the WTA Tour.
"In tennis it's difficult to be friends between women, we are very competitive, we spend all the time travelling and maybe the following day you play against them...for the guys it's different, but the girls... we all hate each other. Literally. And who says the opposite is lying. Even if we think about women's things. We watch each other from head to foot and I think: 'I have better fingernails (laughs)."