They both had such strong personalities that it would end in a fist fight. People talk about how Fischer acted up playing Spaasky and I have read accounts of grandmasters becoming physically ill sitting across from Fischer but I doubt Kasparov could be outdone when it comes to intimidation. Kasparov is probably the only chess player on the planet that could cause Mr. Nice Guy, Yasser Seirawan to curse and threaten physical harm to his opponent, that's saying something.
https://www.youtube.com/watch?v=f0Oh9q7KTwU
Bobby Fisher vs. Garry Kasporav
PLACE YOUR VOTES BELOW