The visiting Warriors opened the scoring when an alert Jalen Henningsen picked off a pass and returned it 60 yards to pay dirt to stun the large West Lyon crowd and stake Alta-Aurelia to a 6-0 lead they would retain throughout the period.
But the Wildcats answered back with three TDs in the second frame to take command of the game. The winners scored on a 20-yard run by Adam Teunissen, a 42-yard TD pass from quarterback Brandon Snyder to Teunissen, and a 6-yard TD jaunt by Ethan Ageson.
West Lyon scored single TDs in the third and fourth periods, the first a 5-yard Snyder to Teunissen pass, and the second a 22-yard run with a fumble recovery by Jordan Schemmel.
The 3-1 Wildcats rushed 56 times for 455 yards, and Snyder was 3-6 passing for 24 yards.
A-A rushed 42 times for 205 yards, with Henningsen leading the way with 17 carries for 94 yards, and Garrett VanHouten 14 carries for 63 yards. Napierala rushed five times for 42 yards, and was 3-11 passing for 22 yards and one pick and one TD.
VanHouten, Ross Parcel, and Dylan Harms led the A-A defense with 11 tackles each, and Stephan had eight. Henningsen, Parcel, and VanHouten each recovered a fumble for the Warriors.
A-A (1-3) hosts 3-1 Hartley-Melvin-Sanborn in Alta Friday night.