George Kenneth Griffey Jr., nicknamed "Junior" and "the Kid", is an American former professional baseball outfielder who played 22 years in Major League Baseball (MLB). He spent most of his career with the Seattle Mariners and Cincinnati Reds, along with a short stint with the Chicago White Sox. A member of the Baseball Hall of Fame, the first overall pick in the 1987 draft, and a 13-time All-Star, Griffey is one of the most prolific home run hitters in baseball history; his 630 home runs rank as the seventh-most in MLB history. Griffey was also an exceptional defender and won 10 Gold Glove Awards in center field. He is tied for the record of most consecutive games with a home run.

In baseball, a home run is scored when the ball is hit in such a way that the batter is able to circle the bases and reach home plate safely in one play without any errors being committed by the defensive team. A home run is usually achieved by hitting the ball over the outfield fence between the foul poles without the ball touching the field.