Missy Meharg needed to fix the Terps' backline and turned to the assistant coach and former Olympian to do so.
The Terps won their second straight game in overtime on Van Rootselaar's third goal in two games.
It's the first time the starting spot has been up for grabs since previous goalie Noelle Frost locked down the job in 2018.
The Terps almost came back from a two-goal deficit, however they failed to find a game-winning third goal.
The Terps held the Wolverines and Michigan State to one total goal last weekend as the Big Ten tournament approaches.
The Terps' defense has been integral to their success this season — the backfield has posted five shutouts.
The Scarlet Knights' goalkeeper made 12 saves, shutting out the Terps.
Coach Missy Meharg was pleased with the sustained dominance her team had in their previous matches and wants to see it continue with top-tier opponents up next.
Bibi Donraadt netted two goals as the Terps dispatched the Eagles.
The Terps tallied 13 shots but were shutout Sunday.