Owatonna's girls' hockey team opened the Section 1AA playoffs with a 3-2 upset win over Rochester Mayo at Graham Arena Wednesday night. The sixth-seeded Huskies never trailed while beating the No. 3 seed Spartans. It was the fourth meeting between the teams this season and Owatonna's second win. In Mayo's two victories they scored late in regulation and won in overtime. The stage was set for a similar finish Wednesday.