Most Overrated: Aaron Ross
Aaron Ross looked like he was on his way to becoming a great corner in 2008. He was the Giants first round pick in 2007 and had a fine rookie season, helping the Giants win the Super Bowl.
However, he has since been replaced by Terrell Thomas, drafted in the second round in 2008, due to his poor play and inability to avoid the injury bug. A hamstring injury kept him out of most of the 2009 season, and in 2010 he rarely saw the field.
A free agent after this season, we could see the last of Aaron Ross in 2011.
Most Underrated: Deon Grant
Deon Grant didn't get much recognition outside of New York simply because he wasn't in the starting lineup. However he was an integral part of Perry Fewell's defense. Fewell liked to go to his three safety set very often and Grant was the X-factor in his ability to do that.
Grant was terrific in run support and usually replaced a linebacker. He is a free agent now and will likely depart for a starting role; he will be missed by Fewell to say the least.