 In addition, the current AFC deal also saw CBS indirectly acquire the rights to air games played by the Pittsburgh Steelers, which air locally on KDKA-TV (which was a CBS O&O by the time the network re-acquired the NFL rights, and has long been one of CBS's strongest stations) and often earn the highest television ratings for an NFL team due to the Steelers' rabid fanbase on a national level.Coincidentally, before the AFL-NFL merger, the team's road games had aired on KDKA as part of the NFL's deal for CBS to air its games, while home games could not be televised "at all" during this period, even if tickets for each individual matchup played in the Steelers' home stadium did sell out.As CBS took the hardest hit from the switches, due partly to having been relegated to lower-tier affiliates in several major markets, NBC became the most-watched network in the United States, as it not only experienced the fewest effects of the switchover, but also benefited from a strong slate of programming at the time (including "Friends", "Frasier", "Seinfeld", "Law & Order", "ER" and "Dateline NBC").