Controversial

The hero of the Europa League has yet to reveal themselves. The villain, on the other hand, is well-known and must be defeated.

Slavia Prague needs an ass-kicking. The racist Slavia Prague issues are eye-opening and infuriating.

The Czech side defeated Rangers in the Round of 16 and is under investigation after one of the club’s players allegedly racially abused Glen Kamara.

Slavia defender Ondrej Kudela could be seen covering his mouth and saying something to Kamara. A scuffle ensued afterwards and Rangers players have said Kudela used racist language.

Watching March Madness over the weekend has made me realize that the world of sports is incredibly cruel. Talent is often not enough to defeat an opponent, and sometimes outplaying the other team isn't even good enough to earn a victory. 

In the Premier League, the teams on the receiving end of this bad luck are usually found in the lower reaches of the league table. Generally speaking, the relegation zone contains three of the worst teams in the league, but that doesn't necessarily mean that they are the three clubs that deserve to be relegated. 

In soccer, rivalries are an important part because playing a “Derby” or “Clásico” is a privilege. However, a special flavor to these duels is tasted when remembering those players who, without any remorse, put on the shirt of the hated rival and played for both teams. These are the authentic "Judases" of soccer that will remain in history for their controversial passage from one team to another. 

Here we bring you the biggest players who played for the hated rival.