Rettinger helped the Lakers defense lock down Molloy to the tune of just 30 shots taken during the win.
Rettinger collected five ground balls and forced a pair of turnovers. He also added an assist and fired off two shots.
Mercyhurst only allowed one goal in the opening period and pitched shutouts in the second and fourth periods.
Rettinger has played in all four games for the Lakers this spring and has eight ground balls and four caused turnovers.