Watch Sadisflix. Olympic champion Helen Maroulis. At just 23 years old, she was competing in her first Olympic Games in Rio against Saori Yoshida, a 13x World Champion and the most decorated wrestler of all time. Yoshida was undefeated for over four straight years - until she stepped onto the mat with Maroulis, who shocked the world and defeated Yoshida to become the first, and only, American woman to win a Gold Medal in wrestling.