4. OF "Shoeless" Joe Jackson
Reason for infamy: Involvement in 1919 Black Sox scandal. Despite the fact that "Shoeless Joe" hit better in the 1919 World Series than he did in the regular season of that year, he was still banned from baseball as part of the Black Sox scandal in which the White Sox threw the World Series. Jackson was paid by gamblers, so technically he tainted the sanctity of the sport, but he didn't actively throw any of the games. Regardless, he was by far the best player to be banned from the sport for life, so he goes down in infamy for his part in baseball's darkest era of history.
Reason for infamy: Involvement in 1919 Black Sox scandal. Despite the fact that "Shoeless Joe" hit better in the 1919 World Series than he did in the regular season of that year, he was still banned from baseball as part of the Black Sox scandal in which the White Sox threw the World Series. Jackson was paid by gamblers, so technically he tainted the sanctity of the sport, but he didn't actively throw any of the games. Regardless, he was by far the best player to be banned from the sport for life, so he goes down in infamy for his part in baseball's darkest era of history.