Back problems hampered Rivera's stint with Cowboys
IRVING, Texas -- Three-time Pro Bowl guard Marco Rivera was released Thursday after two seasons and two back operations while with the Dallas Cowboys.
Rivera initially injured his back while running on a treadmill in March 2005, only a week after signing his $20 million, five-year free agent deal. He had surgery to repair a bulging disc in his lower back, but still started the first 14 games in 2005 before being sidelined by a strained neck.
Last season, Rivera ...
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