"When we beat Pittsburgh the first time, that lit a fire underneath me," Kelly said Thursday after signing a one-year deal. "Then we went to their stadium and beat them a second time. I was like, ‘Man, there is only so much more I can miss. I can’t miss much more of this.’ I’ve just been excited throughout the season. I’ve been excited in the offseason. I’ve been excited all the way up to this point. I’m just excited about the opportunity just to strap them back up."