Berra played almost his entire 19-year baseball career (1946–1965) for the New York Yankees. Berra is one of only four players to be named the Most Valuable Player of the American League three times and is one of seven managers to lead both American and National League teams to the World Series. As a player, coach, or manager, Berra appeared in 21 World Series. He was elected to the Baseball Hall of Fame in 1972.

Larsen pitched the sixth perfect game in MLB history, doing so in Game 5 of the 1956 World Series. It is currently the only no-hitter or perfect game in World Series history and is one of only two no hitters in MLB postseason history. He won the World Series Most Valuable Player Award and Babe Ruth Award in recognition of his 1956 postseason.

This H&B Louisville Slugger Grand Slam Yogi Berra model bat was signed in black by both Berra and Larsen. This bat includes a JSA sticker and COA.