Charles John Grimm, nicknamed "Jolly Cholly", was an American professional baseball player and manager. He played in Major League Baseball as a first baseman, most notably for the Chicago Cubs; he was also a sometime radio sports commentator, and a popular goodwill ambassador for baseball. He played for the Pittsburgh Pirates early in his career, but was traded to the Cubs in 1925 and worked mostly for the Cubs for the rest of his career. Born in St. Louis, Missouri, to parents of German extraction, Grimm was known for being outgoing and chatty, even singing old-fashioned songs while accompanying himself on a left-handed banjo. Grimm is one of a select few to have played and managed in 2,000 games each.

The 1929 World Series featured the American League (AL) champion Philadelphia Athletics playing against the National League (NL) champion Chicago Cubs. The Athletics defeated the Cubs in five games to win the Series.