The Indianapolis Colts have signed Ryan Kelly to a four-year, $50 million extension that includes $34 million in guaranteed money.

The deal is the NFL's richest for a center.

"Feels good to be rewarded," Kelly said. "I want to live up to the contract I signed. Go out every single day, be the leader on the offensive line they I know I can be. Play with the consistency I can play with and stay healthy. Those are the things that drive me every single day."