If you are underwhelmed by the coaching staff Chip Kelly has assembled in the NovaCare Complex, you are not alone. Utilizing stealth and patience, Kelly lured coordinators Pat Shurmur and Billy Davis in an apparent attempt to re-create the magic that was the 2012 Cleveland Browns.

But take heart. As long as no one says the words "wide nine" out loud, there is hope.

The non-announcement of Davis as defensive coordinator Thursday gave, at long last, some public sign of what Kelly's defense will look like. If you go by Davis' previous coordinator experience, the signs are mostly discouraging.

Davis was fired as San Francisco's defensive coordinator after two mediocre seasons under head coach Mike Nolan. He was hired as a linebackers coach with Arizona in 2007, was promoted to coordinator in 2009, and then fired after one decent year and a second, downward-trending season.

What can we learn from Davis' experience? Mostly, the same thing we can take from most coaches' records:

Players matter more than schemes. Period.

The 49ers defense improved markedly after Davis left. Is that possibly because the team added Patrick Willis, then Justin Smith, then Dashon Goldson, then NaVorro Bowman - the nucleus of the defense that just played in the Super Bowl - over the next few years?