Rob Gronkowski goes back under the knife on Tuesday, per multiple reports, this time to have surgery on his back.
Gronkowski, who has had four precedures on his broken forearm since originally breaking it last season.
Reports surfaced last month that Gronkowski would need the back surgery, which is scheduled to be performed by Dr. Robert Watkins, who recently operated on New York Giants defensive end Jason Pierre-Paul.
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Terry McCormick covers the Titans for TitanInsider.com
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