John Phalen "Stuffy" McInnis was an American first baseman and manager in Major League Baseball. McInnis gained his nickname as a youngster in the Boston suburban leagues, where his spectacular playing brought shouts of "that's the stuff, kid".

The Philadelphia Athletics were a Major League Baseball team that played in Philadelphia from 1901 to 1954, when they moved to Kansas City, Missouri, and became the Kansas City Athletics. Following another move in 1967, the team became the Oakland Athletics. In 2025 the franchise will move temporarily to Sacramento before permanently moving to Las Vegas.