New England Patriots tight end Rob Gronkowski is listed as doubtful on the injury report heading into the season opener against the Buffalo Bills, meaning he's all but a lock not to play Sunday.

Gronkowski underwent offseason back and forearm surgeries.

He's been limited in practice all week.

The Patriots ruled out offensive lineman Will Svitek with a knee injury.

Questionable: Brandon Bolden, Aaron Dobson, Nate Ebner and Duron Harmon.

Wide receiver Danny Amendola is probable with a groin injury.

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Aaron Wilson covers the Ravens for The Baltimore Sun.