Marshall led the IIAC in six categories and set a new Iowa Conference record with 18 doubles in conference games. In 28 conference games, he led the league in slugging percentage (.835), on base percentage (.524), runs scored (39), doubles (18), total bases (86), and plate appearances (127). He was also second in batting average (.417), hits (43), and RBI (30). Overall, he leads the IIAC in on base percentage (.498), runs (60), hits (64), doubles (25), walks (33), total bases (114), and plate appearances (210). Marshall was a First Team All-IIAC selection in 2014 as a sophomore in the outfield.
