John Richard Jeanneret is a Canadian retired television and radio personality best known as the play-by-play announcer for the National Hockey League's Buffalo Sabres and its broadcast network, the Sabres Hockey Network for 51 years. Having started with the team on radio during the team's second season in 1971β72, and ending his career after the 2021β22 season, he is the longest-tenured play-by-play announcer with a single team in NHL history. He moved to television during the 1995β96 season and began doubling both television and radio play-by-play duties during the 1997β98 season. He is known as "RJ" within the Sabres organization and by close associates.