Players said the off-court chemistry between them has never been better since Bernson took the helm last season.
Marrow works for the same organization head coach Gregg Ritchie played for his entire professional career.
Wesley Mattice is the second hire under first-year head coach Brian Thomas, who took over the program in July.
Former gymnast and 2017 graduate Chelsea Raineri will be an assistant coach for the 2018-19 season.
Kevin Le Vine was an All-American goalkeeper at California and helped the Golden Bears to a national title in 2016.
Kiana Quolas and Laina Holmgren will join softball’s staff as assistant coaches for the 2019 season.
Robles helped Rutgers to a program-best seventh place finish at the Big 10 Championship as an assistant coach and recruiting coordinator.
The Colonials netted the most goals in a single game since head coach Craig Jones took over the program in 2012.
Experts said the policy changes will have a minimal impact on most schools, but will nonetheless change the way GW deals with its best players.
Coaches from half of the fall sports programs have been with their teams for no more than two years.