Welcome to the Rex-O-Meter, where we will track Chicago Bears QB Rex Grossman's Super Bowl XLI performance in real-time. We'll follow Rex using the QB Scale, which is similar to passer rating but also factors in sacks, rushing yards and fumbles lost.

AP photo credits: Charlie Neibergall, Alan Diaz, Alex Brandon, Nam Y. Huh. The site is not affiliated with or approved by Rex Grossman, the Chicago Bears
or the National Football League. It is presented by Cosmonaut Creative Media.