[now the WWE], Jim Crockett Promotions, Mid-South Wrestling and finally, the Turner-owned World Championship Wrestling) until 2001, NCAA college football games (from 1981 to 1992 and from 2002 to 2007 season), various NASCAR auto races and the Olympics-inspired Goodwill Games. The WGN national feed also was prohibited from carrying Chicago Blackhawks hockey games, when WGN-TV assumed local rights to the team during the 2007–08 season, due to broadcast rights restrictions imposed by the NHL to protect the league's exclusive national broadcasting contracts with ESPN and later a joint broadcast-cable contract with NBCUniversal. Evolution and decline; the remaining superstations Even though superstations remained reasonably popular among cable and satellite subscribers, in no small part because of team-based sports broadcasts, various changes to the television industry beginning in the 1990s—especially the proliferation of cable-originated program services and the resultant increase in original programming produced by many cable channels—as well as existing distant signal policies—such as the syndication exclusivity rules—precipitated the decline in their viability. As early as 1986, with the launch of the Fox Broadcasting Company, a handful of the intrastate superstations – such as KMSP-TV (channel 9, now a Fox owned-and-operated station) in Minneapolis–St. Paul, KSHB-TV (channel 41, now an NBC affiliate) in Kansas City and WKBD-TV (channel 50, now a CW owned-and-operated station) in Detroit—that continued to maintain reasonable out-of-market distribution after the March 1983 copyright royalty increase had terminated their carriage agreements with cable providers beyond their home markets because of the presence of local independent stations that were able to serve as prospective Fox affiliates in many of the areas within the imported stations' remaining distribution footprint. Additional decline in the availability of intrastate superstations came in the mid-1990s, when many of the remaining regional superstations let their carriage agreements expire or terminated them outright amid local network affiliation shuffles that caused stations such as KTVT, KSTW and KPHO-TV (channel 5, now a CBS affiliate) in Phoenix taking on affiliations with one of the Big Three networks (ABC, CBS or NBC), as contractual and federal restrictions prevented them from maintaining regional distribution upon becoming major network affiliates. Very few of these stations reduced their distribution as a result of taking affiliations with either the United Paramount Network (UPN) or The WB Television Network. In fact, in December 1993, Time Warner permitted Tribune Broadcasting and United Video to have WGN-TV—which initially had intended to maintain a limited, if any,