The Lions have signed fourth-rounder OT Jason Fox.
Fox is expected to be groomed as a left tackle and should be a backup as a rookie behind Jeff Backus.
In PFW's 2010 Draft Preview, PFW personnel analyst Nolan Nawrocki wrote that Fox "will never be a bulldozer but has enough size, athletic ability and versatility" to become a "solid positional blocker."
The Lions also released WR Marko Mitchell, who was cut earlier in the offseason by the Redskins.
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