Kaylani Sinclair scored two goals to pace the Falcons (5-8) past the Rebels (1-13) in Bethel.
Sinclair scored the lone goal of the first quarter off an assist from Melina Byam. Ella Young made it 2-0 in the second quarter and Sinclair scored from Mallorie Bourret later in the period.
Brooke Brown got the start in net for Mountain Valley and made two saves before Emma Williamson took over and added four more to secure the shutout. Lindy Stephenson stopped 20 shots for Telstar.
Mountain Valley (1-1)
Goals—Mountain Valley, Sinclair 2, Young 1. Assists—Mountain Valley, Bourret 1, Byam 1. Penalty corners—Mountain Valley 3, Telstar 4. Goalies (saves)—Mountain Valley, Brown (2), Williamson (4); Telstar, Stephenson (6).