You win on the football field, you have the right to do a bit of trolling on the internet. Those are the rules.

And Utah humbly obliged Saturday evening after stunning No. 7 USC 43-42 inside Rice-Eccles Stadium to hand the Trojans their first loss of the season. When Utah quarterback Cameron Rising crossed the goal line with less than a minute to play for what would be the game-winning touchdown, he flashed the peace sign — the thing you’ll see from every USC fan, or coach, or player, or administrator.

USC says it’s a V for victory, a gesture that draws its origin from Homer’s Trojan War, when the Trojans would, after defeating their opponents, cut off their enemies’ first two fingers on their right hands to prevent them from holding a sword and “fighting on.”

The team’s slogan is “Fight On,” so it was a fitting caption for Utah after out-muscling the Trojans in the second half.

Utah outscored the Trojans 15-7 in the fourth quarter. In fact, the Utes fell down 14-0 early and it looked to many like USC would run away with a statement victory. Utah fought back, though. The home crowd — electric all evening — certainly helped, and Rising was tremendous.

He threw for 415 yards and two scores while rushing for 60 yards and another three scores.

After USC averaged 14 yards a play in the first quarter, Utah held the Trojan offense to just 6.4 the rest of the way.

The win kept Utah firmly in contention for a spot in the Pac-12 Championship Game later this fall.