Buccaneers quarterback Baker Mayfield played the entire game, but he walked off the field favoring his left arm.
Coach Todd Bowles said Mayfield took a hit to his left hand. X-rays were negative.
Bowles said Mayfield was diagnosed with a contusion.
Mayfield said his hand hurts but is “fine” after bruising it with a hit on a facemask.
He had a bloody right finger earlier in the game.
Mayfield finished 19-of-37 for 206 yards and an interception in the 20-6 loss to the Lions.