Edwin David Joost was an American professional baseball player and manager. He played as a shortstop in Major League Baseball for all or portions of 17 seasons between 1936 and 1955. In 1954, Joost became the third and last manager in the 54-year history of the Philadelphia Athletics. Under Joost, the A's finished last in the American League and lost over 100 games. After that season, they relocated to Kansas City.

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.