Henry Wiggen (Moriarty) is a star pitcher for the New York Mammoths, a fictional Major League Baseball team. He is a valuable player to his manager Dutch but is in a dispute with the team's ownership, holding out for a new contract and more money. Henry has a sideline as an insurance salesman working for the Arcturus Corporation, with ballplayers as his clients. Henry's friend Bruce Pearson (De Niro), the team's catcher, is a player of limited skill and intellect. Teammates call Henry by the nickname "Author" because the brainy pitcher once wrote a book, although Bruce misunderstands and, with his thick Southern drawl, often calls him "Arthur" instead.