... the only constant on San Diego's defensive line over the past two years.

He has played well and improved over his relatively short career, and the Chargers recognized that and gave him a large contract extension last year.

However, he finds himself entering an offseason where even his spot isn't safe.

Defensive rotations during OTAs have been very fluid so far. Antonio Garay, Jacques Cesaire, and Ian Scott have all shared time with Castillo during drills so far.

While this interesting change may not mean a whole lot, it sure follows along with GM AJ Smith's "new plan".

Smith is holding everyone accountable this offseason. He is threatening to cut the salaries of RFAs Vincent Jackson and Marcus McNeil, and ...

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