Vikings sign Robison to 3-year deal
Robison was one of the main backups on the defensive line and is valued for his versatility. He plays both end and tackle and had two sacks last season.
Robison's deal casts Edwards' future in Minnesota into further doubt. Edwards started at defensive end for the Vikings last year, but his free-agent status could change under a new collective bargaining agreement.
Copyright 2011 by The Associated Press
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