"Things were different after that stop," said Grier, who ran for 103 yards and two touchdowns on 12 carries and completed 15 of 24 passes for 126 yards, including a 34-yard touchdown pass to Fred Crozier for SC's first score.
Cunningham finished with 86 yards on 19 carries, and SC ran more than 40 plays from scrimmage in the second half.
The Timberwolves dominated the line of scrimmage through the first half, as leading rusher Dylan Lageman picked up 124 of his game-high 146 yards. Coach Brad Dingess said SC's up-tempo offense and a defensive change on the part of the Black Eagles proved to be his team's undoing.
"They started pinching really hard, and we were lining up on one side and they were bringing an extra guy from the back," Dingess said. "It was just one more guy there than we could block."
Spring Valley had 234 of its 353 total yards in the first half, and gained 54 of its 119 yards on its last possession after the teams had put their reserves into the game.
"It's big because it's a win, first of all," Mays said. "But it's also big because we went on the road and beat a physical football team. That's what we've been talking about since the preseason -- being physical with people. The guys came out tonight and did that. It feels good."
Senior Marquel Hampton led all receivers with five catches for 44 yards.