No one was surprised when third baseman Matt Shaw made the Cubs' Opening Day roster. Chicago's top prospect showed his potential all throughout his minor league career, and there wasn't really anything left for him to prove down in Triple-A. MLB Pipeline's No. 18 overall prospect hit .298 with seven home runs, 21 RBI, and six stolen bases in 35 games at Triple-A Iowa last season.However, Shaw wasn't quite ready for the big leagues just yet. He struggled in his first 18 major league games, ...