John Anthony Franco is an American former professional baseball player. He played in Major League Baseball as a left-handed relief pitcher between 1984 and 2005. Franco established himself as an All-Star player with the Cincinnati Reds before spending the majority of his career with the New York Mets. He ended his 21-year career with one final season with the Houston Astros.

In baseball, a save is credited to a pitcher who finishes a game for the winning team under certain prescribed circumstances. A pitcher earns a save by entering a game in which his team is winning by three or fewer runs and finishing the game by pitching at least one inning without losing the lead. The number of saves or percentage of save opportunities successfully converted are oft-cited statistics of relief pitchers, particularly those in the closer role. The save statistic was created by journalist Jerome Holtzman in 1959 to "measure the effectiveness of relief pitchers" and was adopted as an official Major League Baseball (MLB) statistic in 1969. The save has been retroactively tabulated for pitchers before that date. Mariano Rivera is MLB's all-time leader in regular-season saves with 652, while Francisco Rodríguez earned the most saves in a single season with 62 in 2008.