The Reign played the mirror opposite of Saturday’s effort — taking a 2-0 lead in the first period, then allowing five unanswered, including two in the final two minutes.
Dan Knapp scored his first goal of the year, and Robert Pearce was credited with his fourth of the season when Idaho defenseman Brendan Milnamow scored into his own net, to give the Reign the early cushion.
But Idaho fought back with a hard-luck goal with 1.8 seconds left in the middle period, when Evan Barlow fired a slapshot past a stickless Mike Howe to give the Steelheads their first goal.
Idaho added goals in the third period by Mark McCutcheon, Barlow, Mark Derlago and an empty-netter by McCutcheon, when the Reign were outshot 15-3.
More details in tomorrow’s editions of the Sun and Bulletin.