In baseball, a home run is a hit in which the batter is able to circle all the bases, ending at home plate and scoring a run himself (along with a run scored by each runner who was already on base), with no errors by the defensive team on the play which result in the batter advancing for extra bases. Today, the feat is typically achieved by hitting the ball over the outfield fence between the foul poles (or making contact with either foul pole) without first touching the ground, resulting in an automatic home run.

Home runs are among the most popular aspects of baseball and, as a result, prolific home run hitters are usually the most popular among fans and consequently the highest paid by teams, hence the old saying, variously attributed to slugger Ralph Kiner, or to a teammate talking about Kiner, "Home run hitters drive Cadillacs, and singles hitters drive Fords."http://bioproj.sabr.org/bioproj.cfm?a=v&v=a&bid=1066&pid=7516