The Colts really hit it out of the park with their UDFA signings, landing three of the best players that weren't taken in the draft.
The Colts signed the best remaining running back in Virginia Tech's Darren Evans. His knee injuries scared teams away from drafting him, but taking him in undrafted free agency is a no brainer. He's a powerful runner and could see playing time this year.
Perhaps their highest profile signing was ESPN's No. 1 ranked undrafted free agent Joe Lefeged, a safety out of Rutgers. Lefeged was expected to be drafted from the third to fifth round, so the Colts get an incredible steal with this guy. He has ideal speed and strength, and is a proven leader, elected a team captain last year.
Their best signing, in my humble opinion, was TCU center Jake Kirkpatrick. Like Lefeged, Kirkpatrick has the strength, speed, and technique to play in the NFL. He was one of the better centers in the in the 2011 class, and I expect he'll inherit the starting job from current starter Jeff Saturday in a couple of years. Fun Fact: Saturday was also an undrafted free agent.
Add to that underrated quarterback Mike Hartline (Kentucky) and tight end/fullback Mike McNeill (Nebraska) and you have the best group of undrafted free agents in the NFL.
UDFA Grade: A+