Denny Mack

Dennis Joseph Mack (né McGee; March 14, 1850 – April 10, 1888) was an American professional baseball player who was a first baseman and shortstop in the major leagues for eight seasons between 1871 and 1883. He played for seven teams across three major leagues, including as a player-manager for the Louisville Eclipse in 1882.

Career Mack spent three years at Villanova University, then joined the Rockford Forest Citys of the National Association for the 1871 season. The National Association was the first fully professional baseball league, and Rockford compiled a 4–21 record in its 25 games, finishing ninth in the nine-team league before folding at the season's end. Mack appeared in all 25 of his team's games, leading the team with 34 runs scored, 8 walks, and 12 stolen bases.

Mack went on to play the next three seasons in the National Association. During the last of these, 1874, he was involved in accusations of game fixing. On August 20, umpire Billy McLean came forward with allegations that a game between Mack's Philadelphia Whites and the Chicago White Stockings had been thrown by the Philadelphia club.