At Caribou, Delaney Williams scored three second-half goals as Caribou improved its record to 2-0.
Sarah Doak added a goal and an assist for the Vikings while Clara Collins had two assists.
Doak scored off a direct kick 9:08 into the game and Maddy Staples scored off an Erin Patton assist with 10:21 left in the first half to give Caribou a 2-0 lead at intermission.
Delaney Williams scored her first goal 1:21 into the second half off a Doak assist, then Bria Judd scored off a Collins assist with 31:17 left. Williams scored off a direct kick with 18:21 remaining and then capped off her hat trick off a Collins assist with 15:48 to play.
Caribou keeper Morgan Outing saved all five shots she faced. Kayla Madden saved 14 of 20 shots on goal for 0-1 Old Town.