Justin Forsett's 81-yard touchdown in which his left knee and forearm touched the ground was allowed to stand because Jim Schwartz threw a challenge flag.

The NFL automatically reviews all scoring plays, but those plays become unreviewable once a cocah tries to initiate a challenge.

"Yeah, I know that rule," Schwartz said. "You can't challenge a turnover or a scoring play and I overreacted. I was so mad that they didn't call him down 'cause he was obviously down on the field. I had the flag out of my pocket before he even scored the touchdown. That's all my fault. I overreacted in that situation and I cost us a touchdown."

Schwartz yelled at Jim Harbaugh to "know the rules" when Harbaugh tried to challenge a non-reviewable play in a game at Ford Field last year.