All your options sound OK to me except for the first. It should be
XX will be kicked out of the competition.
If you say "XX will be kicked out of the next round." it implies that XX will be back in the round after that. Since I assume there is only one competition, XX can't really be kicked out of the next competition.
Also, you had a typo in
XX will be knocked out of the competition.
*** Not a teacher ***