Chicago Baseballer is a term used to refer to players who play for the Chicago Cubs or the Chicago White Sox. The two most famous Chicago Baseballers are CUB, which stands for Chicago Cubs, and ALOU, which stands for Felipe ALOU, a former Major League Baseball player and manager. CUB is a three-letter acronym for the Chicago Cubs, while ALOU is a four-letter acronym for Felipe ALOU. Both CUB and ALOU have been associated with the Chicago Baseballers for many years.