John Richard Jeanneret (born July 23, 1942) is a Canadian-born 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. Having started with the team on radio during the team's second season in 1971–72, he is the longest-tenured play-by-play announcer with a single team in NHL history. He moved to television during the 1995–96 season and began doubling both television and radio play-by-play duties during the 1997–98 season. He is known as "RJ" within the Sabres organization and by close associates.