only weekday games as WPIX held rights to selected Yankees weekend games; it also contended the anti-siphoning rules did not apply as there was not a per-program charge for the broadcasts. In September 1974, citing the games were unavailable on broadcast television, the FCC gave temporary authorization for HBO to carry no more than three of the team's remaining regular season games. (The Yankees telecasts ran only for that season.) From 1973 to 1976, HBO carried Professional Bowlers Association (PBA) tournament events; beginning with the Winston-Salem Open on June 10, 1973, the network aired around 25 PBA tournaments, including eight which HBO co-sponsored over those three years. Dick Stockton, Marty Glickman and Spencer Ross served as play-by-play announcers, and Skee Foremsky acted as the color commentator for the bowling telecasts. With the assistance of programming consultation and acquisition firm Trans World International, the expansion into a national service resulted in HBO expanding its sports coverage to include a broader array of events from the United States and Canada, including the North American Soccer League (1976–1978), select Amateur Athletic Union tournaments (1976–1981), select LPGA golf tournaments (1976–1978), championship rodeo (1976–1978), the USGF National Gymnastics Championships (1976–1981), Skate Canada International (1976–1978), the Canadian Football League (1976–1978), non-basketball NCAA tournaments including the Men's Gymnastics Championships (1976–1978) and the Division I Baseball Championships (1977–1978). Most of the aforementioned events ceased to be part of HBO's sports offerings in 1978, citing much of its sporting events generally had regional appeal, "don't repeat" and were readily abundant on commercial television. The NCAA regular season and tournament events remained on HBO until the 1978–79 athletic season, shifting over to upstart basic cable network ESPN beginning with the 1979–80 athletic season under an exclusive national cable deal with the organization; USGF, AAU and select non-NCAA invitational events remained on the network until early 1981, thereafter limiting HBO's sports rights to boxing and Wimbledon. Wimbledon tennis In July 1975, HBO inaugurated regional coverage of the Wimbledon tennis tournament for its Mid-Atlantic U.S. subscribers. (That year saw Arthur Ashe defeat defending champion Jimmy Connors, 6–1, 6–1, 5–7, 6–4, in the Gentlemen's Singles final, becoming the first Black male to win a Wimbledon singles title.) Initially, the HBO telecasts of the tournament mainly consisted of replays culled from other video sources (including the BBC); HBO Sports began to employ an in-house team of commentators starting with the 1978 tournament. Throughout its