The reality TV star was punched in the face during the bout – one of several scheduled between members of the public and the socialite's family – on Tuesday (03.11.09) while a match involving her brother Rob Kardashian saw him hospitalised with concussion.
Kim said: "My girl was a good sport, but she was tough! I knew I had to do it for charity, since that's what it was all about, but man, my girl could throw a punch!"
While the 'Keeping Up With The Kardashians' star was satisfied with her opponent, something went wrong when someone who appeared to be "a trained fighter" got into the ring with her brother.
Kim said: "At one point Rob's mask fell off and when he put his hands down he got hit in the face and ended up in hospital with a concussion. Rob's a strong guy and can definitely hold his own, but he wasn't expecting to get hit after his mask had fallen off! This guy just got really down and dirty!"
Members of the public who'd bid to fight the family were supposed to be screened to be similar weights to their opponents.
Khloe Kardashian and her sister Kourtney's boyfriend, Scott Disick, then backed out of their fights.
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Photo Gallery: Celeb We Adore - Kim Kardashian
