The great thing about history is that you can tweak it to prove any point that you are trying to make. Think Cassel is going to struggle this season? Compare him to Derek Anderson. Or, better yet, Scott Mitchell. There's no way Cassel can be a great quarterback in Kansas City -- don't you remember when Mitchell fell on his face?
In your face, Cassel fans.
Of course, Steve Young, Brett Favre and Matt Hasselbeck all were backups who switched teams and moved on to stardom. Kurt Warner thrived in new coach Todd Haley's offense.
And if you really want a history lesson, Mitchell had some decent years in Detroit, including one year when he threw for 4,338 yards and 32 TDs.
So in your face, haters.
Don't feel bad, Haley probably couldn't either. For the record, it's Mark Bradley. In your face, again.
With all of that going against Cassel, he's still poised for a great season. Haley specializes in the short passing game, which should play into Cassel's strengths.
Is it really scientific? No.
But it makes more sense than trying to gauge a quarterback's future success by comparing him to completely unrelated players.