SportsCenter (SC) is a daily sports news television program that serves as the flagship program of American cable and satellite television network ESPN. Originally broadcast only once per day, SportsCenter now has up to twelve airings each day; the program features highlights and updates, and reviews scores from the day's (or depending on the airtime, the previous day's) major sporting events, along with commentary, analysis previewing upcoming games, feature segments, and news stories from around the sports world. Since it premiered upon the network's launch on September 7, 1979, the show has aired more than 50,000 unique episodes, more than any other program on American television; SportsCenter is broadcast from ESPN's studio facilities in Bristol, Connecticut and Los Angeles, California. In addition to airing simulcasts or network-exclusive editions on sister networks ESPN2 and ESPNews, the program also produces short in-game updates during sports events aired on ABC as well as an interstitial play countdown segment for fellow sister network Disney XD. ESPN is currently sponsoring SportsCenter and many other productions.