St. Louis Carndinals star pitcher Bob Gibson is vacationing in the Everglades. When his small boat capsizes, Tom comes along in the airboat and gets him out of the water. Gibson agrees to give Mark some pointers and umpire his next game but is not impressed by the way Mark stretches the rules to gain an unsportsmanlike advantage. When Mark has a chance to strike out a batter who has dust in his eye, he decides to play fair and let's the batter compose himself.