Basketball Association (ABA) games for five years; notably, it carried the 1976 ABA Finals—the league's last tournament game prior to the completion of its merger with the NBA—a six-game tournament in which the New York Nets beat the Denver Nuggets four games to two. The merger of the two professional basketball leagues resulted in an early termination of HBO's ABA contract, which was originally set to expire on July 1, 1977, following the conclusion of the 1975–76 season. Through 1977, HBO carried other sporting events originating on the Sterling Manhattan/Manhattan Cable sports channel, including World Hockey Association regular season and playoff games; Eastern College Athletic Conference (ECAC) tournaments (including the Men's Ice Hockey Tournament and the ECAC Holiday Festival basketball tournament); World TeamTennis; international high school basketball invitationals; the National Horse Show; harness racing events from Yonkers Raceway; equestrian, roller derby and ice skating events; the World Professional Karate Championships; the Millrose Games track and field invitational; the Westchester Kennel Club Dog Show; and World Wide Wrestling Federation matches. (The regionalized sports focus was soon copied by other local subscription television services launched during the 1970s and early 1980s, most notably PRISM, ONTV and Wometco Home Theater.) NCAA Division I college basketball games held at Madison Square Garden and, after becoming a national service, other venues (including the National Invitational Tournament and the Holiday Basketball Festival) were also carried by the network until the 1978–79 season. HBO also provided regional coverage of New York Yankees Major League Baseball games for the 1974 season. New York independent station WPIX (now a CW affiliate) provided microwave signal pickup assistance to HBO for the telecasts; through its right of first refusal on game selection in its local television contract with the team, covering the team's away games, WPIX preempted planned coverage of four Yankees games that HBO was scheduled to carry that season. (The Philadelphia Phillies reportedly rejected an offer for HBO to televise regular season games not shown locally on independent WPHL-TV [now a MyNetworkTV affiliate].) HBO's Yankees telecasts spurred a complaint filed in June 1974 by National Association of Broadcasters Special Committee on Pay TV chairman Willard Walbridge, who alleged they violated antisiphoning rules barring pay television services from carrying live sports televised regularly on broadcast stations within a two-year period. HBO representatives contended that regulatory interference over the game broadcasts was prohibited under the First Amendment, and that it offered