During his tenure at Dartmouth, Grocott was a member of Phi Gamma Delta and graduated with a degree in economics. After college he joined the Marines and fought in the Korean War. After returning from Korea, Grocott laced up his skates one final time, joining the US national team for the 1955 Ice Hockey World Championships. The team was in the running for the bronze medal to the end, but a tie in their final game against Sweden allowed the Czechs the opening they needed to claim sole possession of third place, and Grocott's team finished off of the podium.