Everyone knows they have to watch what Aaron Rodgers and Ben Roethlisberger do, that's a no-brainer.
But there are 53 men on each roster, and every one of those guys who are active will play some part in how the game unfolds on Super Bowl Sunday.
Look at what the Steelers did against the Jets last week in the fourth quarter. Roethlisberger threw the ball to Antonio Brown, a rookie few outside of Pittsburgh or his college alma mater of Central Michigan had heard of, and that helped seal the victory over the Jets.
There's always an Antonio Brown lurking on the sidelines. The question is who will make their presence felt in the big game.