there is a female version but the reason is mainly due to the intensity of of it. You'd be hard press to find a female who could compete on the level of most of the males. No because sexist or anything but it's because the same reason why there aren't any female NFL players
I'm not sure this really counts as a genderswap...
And I'd like to remind people, that the above is a good example of something.
Not sexist: "Women aren't often allowed to compete alongside men in many sports because, biologically, men and women are too different to be completely fair." Sexist: "Women aren't often allowed to compete alongside men because they need to Fate/Stay in the Kitchen."