We finally have an answer to why there was a safety in the Super Bowl last Sunday. Supposedly the center didn’t hear the cadence. As it turns out, the noise was a factor in that first play.
From Yahoo Sports:
Manning called the cadence and then started walking up to the line. Presumably it was similar to what the Broncos did in each of their previous 18 regular-season and playoff games. The problem is, center Manny Ramirez didn’t hear Manning’s signal because of the crowd noise from Seahawks fans and snapped it. The ball went past Manning and the Seahawks ended up with a safety.