Many are surprised the Bolts went defensive line so early with pressing needs at safety, cornerback and offensive tackle. However, it was a position that needed an influx of new blood. The other six players all return from last year's squad (although Castillo missed most the year) and were part of a unit that badly underperformed.
DE Kendall Reyes
He has the lower-body strength to anchor against the run and the refined technique to collapse the pocket and make plays in the backfield. Although he does not make as many flashy plays as Melvin Ingram, he is an experienced and productive player who will be ready for a sizable role on opening day.
A four-year contributor at Connecticut, his college numbers include 142 total tackles, 32.5 tackles for loss, 11 sacks, 12 passes batted down and three forced fumbles. He was named first team All Big East in 2010 and 2011.
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Michael Lombardo is a long-time contributor to the Scout.com network. His analysis has been published by the NFL Network, Fox Sports and MySpace Sports. He has followed the Chargers for more than 16 years and covered the team since 2003. You can see more of his updates by following him on twitter.