Reflections as Cardinals place Kolb on IR

The Arizona Cardinals have placed quarterback Kevin Kolb on injured reserve.

Kolb finishes his second season in Arizona with the following stats: 183-of-218 passing (59.6 percent) for 1,169 yards (6.4 per attempt) with eight touchdowns, three interceptions and 27 sacks. His NFL passer rating was 86.1. His Total QBR score was 38.0 (100 maximum, 50 average).

QBR divides credit/blame based on what is typical over time. Kolb was probably less to blame for some of the sacks than would typically be the case. The Cardinals' offensive line had serious problems protecting for much of the time when Kolb was in the lineup. Kolb previously held the ball too long. That happened some this season as well.

At the very least, Kolb proved to be the Cardinals' best option at quarterback by a wide margin this season. John Skelton (55.4 rating, 13.9 QBR) and Ryan Lindley (42.6 rating, 6.8 QBR) have struggled. The question now becomes whether Kolb returns to Arizona, and at what price. Much will hinge on any changes the Cardinals make to their coaching staff and/or front office.

The chart shows the Cardinals' quarterback stats over the past five seasons. Kolb has taken 57 sacks on 507 dropbacks (11.2 percent). Former starter Kurt Warner took 50 sacks on 1,157 dropbacks (4.3 percent). The different reflects more than a drop in offensive line performance. Warner was much better at anticipating throws and getting rid of the ball quickly.

Arizona needs to upgrade the position whether or not Kolb comes back.

Five-year glance: Cardinals QBs Since 2008 (min 5 att.)