After graduating from Harvard, Felton declined a record offer to play Major League Baseball for Connie Mack's Philadelphia Athletics.

The New York Times reported that, because Felton was not wearing any protective pads over his hips, the kick broke several blood vessels and formed a clot.

The New York Times reported on the game as follows: "Harvard shut out Amherst, 5 to 0, this afternoon because of the masterful pitching of Sam Felton, the former football end rush and punter.

This much sought collegian, whom Mack thinks would have made one of the greatest pitchers In the history of the game, is Samuel Felton, football and baseball star at Harvard for three years.

Within the past month Mack offered Felton a flat contract of $15,000 for three years, agreeing to permit him to make his own terms and giving him the option of an unconditional release should he tire of professional ball, but the persuasion of the Athletics' manager failed.

On the day before his wedding in October 1913, The New York Times reported that Harvard's undergraduates "jammed the Union" to give Felton "a rousing send-off.