[1] At the age of 16, Jerry Harrington began to play semi-professional baseball with the Bonaparte, Iowa, team.

Harrington continued to play in the Central Interstate League in 1889 with the Davenport Hawkeyes/Monmouth Browns.

In David L. Porter's Biographical Dictionary of American Sports: Q–Z, it was noted that Rhines, Harrington and fellow Reds teammate Pete Browning received fines and suspensions because of misbehavior outside of baseball.

In 1893, Harrington joined the Louisville Colonels, which would prove to be his final season in professional baseball.

[2] On April 16, 1913, at the age of 44, Harrington was struck in the head with a beer can and killed by Tom Merritt, described in Lee Allen's book The Cincinnati Reds as a "thug.