Bob Johnson was a very good player who arguably had the misfortune of playing for the Philadelphia Athletics at a time when they were not that good.  As such, many of his accomplishments went unnoticed, but that is one of the reasons why we are here.

Harry Davis began his pro career in the National League in 1895, and other than leading the league in Doubles in 1897, it was reasonably non-descript as it was spent with four teams (New York Giants, Pittsburgh, Louisville, and Washington).  He played for the minor league Providence Grays in 1900 and was ready to call it a career when Connie Mack came calling.  Mack convinced Davis to play for him, and it was a win-win for both parties.

Bert Campaneris made his debut with the Kansas City Athletics in 1964, and he would secure the starting Shortstop role for the team, which would be a role he had until he signed with the Texas Rangers after the 1976 season.

When you are called "Home Run," it would make perfect sense that you would be an individual that won four Home Run Titles.  Although, this was the dead ball era, and the man in question did so with totals of 11, 10, 12, and 9.