Michael Ray Jackson is a former professional baseball player whose career spanned 19 seasons, 17 of which were spent in Major League Baseball (MLB). Jackson, a relief pitcher for the majority of his career, compiled a career earned run average (ERA) of 3.42, allowing 451 earned runs off of 983 hits, 127 home runs, and 464 walks while recording 1,006 strikeouts over 1,005 games pitched.

The Philadelphia Phillies are a Major League Baseball team based in Philadelphia, Pennsylvania. They are a member of the Eastern Division of Major League Baseball's National League. The team has played officially under two names since beginning play in 1883: the current moniker, as well as the "Quakers", which was used in conjunction with "Phillies" during the team's early history. The team was also known unofficially as the "Blue Jays" during the World War II era. Since the franchise's inception, 2,081 players have made an appearance in a competitive game for the team, whether as an offensive player or a defensive player.