▁Tom lin ▁noted ▁in ▁a ▁press ▁conference ▁that ▁there ▁were ▁significant ▁inj uries ▁suffered ▁by ▁members ▁of ▁the ▁Ste el ers ▁defense . ▁The ▁Ste el ers ▁posted ▁a ▁message ▁on ▁their ▁Twitter ▁page ▁announ cing ▁that ▁Harrison ▁will ▁return ▁to ▁the ▁Ste el ers . ▁ ▁Harrison ▁officially ▁signed ▁with ▁the ▁Ste el ers ▁on ▁September ▁ 2 3 , ▁ 2 0 1 4 . ▁He ▁recorded ▁ 4 5 ▁tack les ▁and ▁ 5 . 5 ▁s acks ▁in ▁ 1 1 ▁games . ▁ ▁On ▁March ▁ 2 2 , ▁ 2 0 1 5 ▁Harrison ▁signed ▁a ▁two - year ▁extension ▁with ▁Pitts burgh ▁for ▁$ 2 . 6 5 ▁million ▁and ▁a ▁$ 5 0 0 k ▁signing ▁bonus . ▁ ▁On ▁February ▁ 1 7 , ▁ 2 0 1 6 , ▁Harrison ▁announced ▁that ▁he ▁would ▁be ▁returning ▁for ▁a ▁ 1 4 th ▁season ▁with ▁the ▁team . ▁ ▁On ▁November ▁ 2 0 , ▁ 2 0 1 6 , ▁Harrison ▁sur pass ed ▁Jason ▁G ild on ▁to ▁become ▁the ▁Ste el ers ' ▁all - time ▁s ack ▁leader ▁with ▁ 7 7 . 5 , ▁during ▁a ▁ 2 4 – 9 ▁win ▁over ▁the ▁Cleveland ▁Brow ns ▁and ▁finished ▁the ▁season ▁with ▁ 7 9 . 5 ▁s acks ▁during ▁his ▁Ste el ers ▁career . ▁On ▁January ▁ 8 , ▁ 2 0 1 7 , ▁he ▁recorded ▁ten ▁combined ▁tack les , ▁s ack ed ▁Matt ▁Moore