Sorgi signed with the New York Giants on March 9, 2010

[The General]

He will backup current Giants quarterback Eli Manning.

Why would they want him?

http://en.wikipedia.org/wiki/Jim_Sorgi#Professional_career

Eli Manning Raves About New Stadium and New Backup Quarterback
New York Times (blog) - Joe Brescia - 3 days ago
... but Manning said not to underestimate the addition of quarterback Jim Sorgi, who backed up his brother Peyton for six years with the Colts. ...