 The rules of the modern game were long considered to have been based on the Knickerbocker Rules developed in 1845 by Cartwright and a committee from the Knickerbockers.However, later research called this scenario into question.After the myth of Abner Doubleday having invented baseball in Cooperstown in 1839 was debunked, Cartwright was inducted into the Hall of Fame as a pioneering contributor, 46 years after his death.