Trading for Kevin Kolb (2011)
After mediocre performances and injuries that led to him losing the starting job to Michael Vick, the Eagles shipped Kevin Kolb to the Cardinals. The problem was the Cardinals traded an elite corner in Dominique Rodgers-Cromartie, who in three seasons with the Cardinals logged 13 interceptions and 61 deflected passes.
In 2011 and 2012, Kolb was up-and-down, serving as a part-time starter, but was never able to ward off John Skelton for the starting job. In two seasons, Kolb started just 14 games for the Cardinals and appeared in 15, throwing for a little over 3,000 yards with 17 touchdowns and 11 interceptions.
While Rodgers-Cromartie took a step back with the Eagles, he also rebounded with the New York Giants, logging nine interceptions between 2015 and 2016 and earning All-Pro Honors in 2015. The Cardinals would draft Patrick Peterson in 2011, and it leaves fans to wonder what the defense would have looked like with Peterson and Rodgers-Cromartie manning both corners.