On April 2, 2005, Zerlentes was participating in the Colorado State Boxing Senior Female Championships at the
Denver Coliseum in
Denver, Colorado. She was
knocked out in the third round by her opponent, Heather Schmitz. Zerlentes fell unconscious, and never regained consciousness. Zerlentes is the first woman known to have died of injuries sustained during a sanctioned boxing match in the
United States. According to the
Denver County coroner, the cause of death was
blunt force trauma to the head. ==References==