The Associated Press

Jeremiah Attaochu is like those sharply dressed seat fillers at the Oscars. The Broncos signed former Steelers outside linebacker Anthony Chickillo off the Saints' practice squad on Thursday, and coach Vic Fangio said it will be between Chickillo and practice squader Derrk Tuszkas to serve as the fourth pass rusher behind Chubb, Attaochu and Malik Reed at Pittsburgh on Sunday. ''I expect him to be a big part of the team,'' Fangio said over the summer.