All-America forward Mallory DeBoom scored 90 seconds into the second overtime to lift visiting St. Thomas to a 1-0, two-overtime victory at UW-River Falls in Friday afternoon's non-conference contest.
The Tommies (2-0-1) outshot the Falcons 8-4 in shots on goal and 25-5 in all shots, and had an 8-2 edge in corner kicks. UST improved to 4-0-2 in overtime play over the last three seasons.
It was the 18th career goal but first of the young season for DeBoom. It was also her 11th game-winning goal.
The Toms return home Sunday to South Field to face St. Scholastica (1 p.m.).