ST. LOUIS - Susie Wyatt is one of the toughest grandmothers you'll ever meet.
We first told you about the mixed martial arts fighter last year. She got a late start in the sport, which she didn't start until she was in her 40s.
Now she has a shot at becoming a national champion, and is preparing to fight in New York.
Watch the video player above to see Rene Knott's story.