 However, Krauss was forced to pull out of the fight after he received a strong knee strike to the ribcage while sparring and had to be rushed to the hospital after complaining of chest pain.Doctors at Freiburg University Hospital diagnosed him with severely bruised ribs, an inflamed chest muscle and a dislocated vertebra, rendering Krauss unable to compete and was replaced on the card by DaMarques Johnson.Krauss faced Mike Stumpf on January 26, 2013 at UFC on Fox 6.