The Seattle Seahawks traded for quarterback Sam Howell ahead of the season in case Geno Smith ever slipped up or couldn't ...

The Seahawks lost starting quarterback Geno Smith with a knee injury in the third quarter against the Packers.

He looked unprepared. Which he was. He looked seldom-used. Which he is. In all, Sam Howell looked like he did during his alarming training camp, back in his first months with the Seahawks.

Enter Sam Howell. Who is Sam Howell? Here's what to know about the Seahawks backup quarterback, who will finish the "Sunday Night Football" game. Who is the Seahawks backup quarterback?