The Pittsburgh Pirates are an American professional baseball team based in Pittsburgh. The Pirates compete in Major League Baseball (MLB) as a member club of the National League (NL) Central division. Founded as part of the American Association in 1881 under the name Pittsburgh Allegheny, the club joined the National League in 1887 and was a member of the National League East from 1969 through 1993. The Pirates have won five World Series championships, nine National League pennants, nine National League East division titles and made three appearances in the Wild Card Game. Despite struggling in the 1880s and 1890s, the Pirates were among the best teams in baseball shortly after the turn of the 20th century. They won three consecutive NL titles from 1901 to 1903, played in the inaugural World Series in 1903 and won their first World Series in 1909 behind Honus Wagner. The Pirates took part in arguably the most famous World Series ending, winning the 1960 World Series against the New York Yankees on a walk-off home run by Bill Mazeroski, the only time that Game 7 of the World Series has ever ended with a home run. They also won the 1971 World Series, led by the talent of Roberto Clemente, and the 1979 World Series under the slogan "We Are Family", led by "Pops" Willie Stargell. After a run of regular-season success in the early 1990s, the Pirates struggled mightily over the following decades with 20 consecutive losing seasons from 1993 to 2012—the longest such streak in American professional sports history. The Pirates returned to the postseason in 2013 and advanced to the NLDS. The team qualified for the postseason again in 2014 and 2015. The Pirates currently have the sixth-longest World Series championship drought (behind the Cleveland Guardians, Texas Rangers, Milwaukee Brewers, San Diego Padres, and Seattle Mariners—all of which except the Guardians have never won a World Series), second-longest World Series appearance drought in Major League Baseball (behind only the Mariners, who have never appeared in a World Series), the longest pennant drought in the National League (their most recent showing being their victory in the 1979 World Series) the longest League Championship Series appearance drought in either league and are tied for the longest MLB division championship drought with the Colorado Rockies and Miami Marlins (the latter two teams having never won a division title and who joined the NL