The Reign came back from a 2-0 deficit to tie the game at 2, before allowing three goals to close out their fourth straight loss.
The three-games series at the E-Center saw the Grizzlies enjoy seven power plays, scoring on four. The Reign (14-20-3-3) have lost 11 of 12 to fall to eighth place in the eight-team National Conference.
David Walker and Sean O’Connor scored goals in the second period, and Curtis Darling stopped 42 of 47 in goal for the Reign. A.J. Perry had a goal and three assists for Utah (18-16-2-2), including a helper on the game-winner at 17:04 of the middle period.