One source gives an entirely different account of how Dunlap obtained the "Sure Shot" nickname. In his book on the history of the home run, Mark Ribowsky wrote that the nickname dated back to a game against the Chicago White Stockings on July 10, 1880. The White Stockings had won 21 straight games until Dunlap hit a walk-off two-run home run in the bottom of the ninth inning. According to Ribowsky, "For this Shot Heard 'Round Cleveland, Dunlap won the nickname 'Sure Shot.'"