Bengals linebacker Vontaze Burfict had words with Steelers linebacker Vince Williams , their conversation ending with Burfict head - butting Williams .
The Steelers accused the Bengals of straying across the 50 to their side of the field during warm - ups .
Bengals linebacker Vontaze Burfict had words with Steelers linebacker Vince Williams , Steelers ' conversation ending with Burfict head - butting Williams .
The Steelers accused the Bengals of straying across the 50 to their side of the field during warm - ups .