Little House on the Prairie - Season 4 Episode 10 -

People in Walnut Grove are betting on a big boxing match in town. Mr. Ingalls does not know that he will be fighting an extremely sick person. That's why Charles is surprised in the ring when he is able to defeat his opponent so quickly. After his opponent collapses, he is brought to Doc Baker. Doc Baker is able to save him but warns him that he needs to stop fighting.