PHOTO: Rex Ryan and Jim Kelly are quickly becoming friends

In Buffalo, there is no greater endorsement than winning the support of Jim Kelly. 

Kelly, a Hall-of-Fame quarterback for the Buffalo Bills during the team's glory years, is getting acquainted with new head coach Rex Ryan. 

Ryan became the 20th head coach in franchise history Sunday, and went out for beers with Kelly at The Big Tree Inn in Orchard Park, New York. 

Ryan previously served as head coach for the New York Jets.