Sports radio (or sports talk radio) is a radio format devoted entirely to discussion and broadcasting of sporting events. A widespread programming genre that has a narrow audience appeal, sports radio is characterized by an often-boisterous on-air style and extensive debate and analysis by both hosts and callers. Many sports talk stations also carry play-by-play (live commentary) of local sports teams as part of their regular programming. Hosted by Bill Mazer, the first sports talk radio show in history launched in March 1964 on New York's WNBC (AM). Soon after WNBC launched its program, in 1965 Seton Hall University's radio station, WSOU, started Hall Line, a call-in sports radio talk show focusing on the team's basketball program. Having celebrated its 50th anniversary on air during the 2015–2016 season, Hall Line, which broadcasts to central and northern New Jersey as well as all five boroughs of New York, is the oldest and longest running sports talk call-in show in the NY-NJ Metropolitan area, and is believed to be the oldest in the nation. Enterprise Radio Network became the first national all-sports network, operating out of Avon, Connecticut, from New Year's Day 1981 through late September of that year before going out of business. ER had two channels, one for talk and a second for updates and play-by-play. ER's talk lineup included current New York Yankees voice John Sterling, New York Mets radio host Ed Coleman and former big-league pitcher Bill Denehy. Emmis Broadcasting's WFAN in New York in 1987 was the first all-sports radio station. The success of the station and its programs, such as Mike and the Mad Dog, caused many to appear around the United States; while only one other radio show besides Mike and the Mad Dog attended the 1990 Super Bowl, about 100 attended the 2004 Super Bowl's radio row. Sports talk is available in local, network and syndicated forms, is available in multiple languages, and is carried in multiple forms on both major North American satellite radio networks. In the United States, most sports talk-formatted radio stations air syndicated programming from ESPN Radio, SportsMap, Sports Byline USA, Fox Sports Radio, CBS Sports Radio, or NBC Sports Radio, while in the Spanish language, ESPN Deportes Radio is the largest current network. In contrast, Canadian sports talk stations may carry a national brand (such as TSN Radio or Sportsnet Radio) but carry mostly local programming, with American-based shows