networks or reach a complex deal with Rainbow to have PRISM and SportsChannel Philadelphia retain the broadcast rights to the 76ers and Flyers. Comcast immediately approached the Philadelphia Phillies – whose contract with PRISM and Sports Channel Philadelphia ended after the 1997 season – about entering into a broadcast deal, indicating it would launch an RSN. After short-lived discussions between Rainbow Media and Comcast about the latter possibly becoming a part-owner in PRISM and SportsChannel Philadelphia, on April 25, 1996, Comcast Spectacor formally announced plans to create a new Philadelphia-centric basic cable channel, which would carry sports events from the Flyers (whose contract with PRISM and SportsChannel was set to end that fall and was extended by one year on October 4, 1996, the day before its season home opener, after strained contract negotiations) and the Phillies. On July 21, 1997, Comcast acquired the local television rights to the Philadelphia 76ers, with the team opting out of its contract with PRISM and SportsChannel that was set to run until the 1999–2000 season. The launch of the new network, Comcast SportsNet Philadelphia, effectively shuttered PRISM and SportsChannel Philadelphia when it launched on October 1, 1997, with the network directly replacing the latter on Philadelphia area local cable systems. Expansion into other markets CSN began to expand with a series of acquisitions and new establishments: on July 11, 2000, Comcast acquired a 75% majority interest in Washington/Baltimore-area regional sports network Home Team Sports and Minneapolis-based network Midwest Sports Channel from Viacom for approximately $150 million. Minority owner News Corporation, which wanted to acquire full ownership of both networks to make them part of its Fox Sports Net group, sued Comcast and Viacom on July 21 in an attempt to block the sale. On September 7, 2000, as part of a settlement between the two companies, Comcast traded its equity interest in Midwest Sports Channel to News Corporation in exchange for sole ownership of Home Team Sports. HTS was later relaunched as Comcast SportsNet Mid-Atlantic on April 4, 2001. On October 1, 2004, Comcast SportsNet Chicago was launched to replace FSN Chicago, as the local teams wanted to have editorial control over their broadcasts. Also in October 2004, Comcast SportsNet West was launched conjunction with Maloof Sports & Entertainment, owners of the Sacramento Kings. The channel was renamed Comcast SportsNet California in 2008. On April 30, 2007, Cablevision Systems Corporation sold its 50%