http://fansided.com/2013/06/26/semmy-schilt-retires-due-to-heart-condition/ It's too bad he was forced into it by this heart issue. He was and always will be an imposing MMA and K-1 fighter.
probably the best k-1 fighter ever. wasn't a bad mma fighter either. should've fought more. probably would've been better than crocop. he knew how to fight off his back and had decent submissions.