the two cities are the best rivalries in all of sports. Decades before professional baseball became popular, New York and Boston claimed distinctive versions of bat-and-ball games. A variant of baseball known as The Massachusetts Game was played in New England in the 1850s, while New York teams played by the Knickerbocker Rules set up by Alexander Cartwright. The New York rules eventually became the basis for the modern sport of baseball. Teams in Boston and New York offer some of the best rivalries in their respective sports, none are more famous, however, then the longtime feud between the New York Yankees and the Boston Red Sox in Major League Baseball. The viciousness and fierceness of the rivalry has led to the New York–Boston rivalry being evident between the New York Jets and the New England Patriots in the National Football League and the New York Knicks and the Boston Celtics in the National Basketball Association. The New York Rangers have been longtime rivals with the Boston Bruins also due to the fact that both teams are members of the National Hockey League's Original Six franchises, but this has been eclipsed by the Metropolitan Division rivalries in recent years. The rivalry has also spread to other teams not in the same league, The 1986 World Series between the New York Mets and the Boston Red Sox is considered a classic especially the 6th game and the famous Bill Buckner error. The New York Giants and New England Patriots have played two classic Super Bowls: Super Bowl XLII which features the Helmet Catch and Super Bowl XLVI, There is also a rivalry between the Boston Celtics and the Brooklyn Nets. While Major League Soccer has two teams in the New York area and one in the Boston area, the rivalry between New York City FC and the New York Red Bulls overshadows either team's rivalry with the New England Revolution. Philadelphia In each of the four sports leagues, as well as Major League Soccer, there is intra-division competition between teams from New York and Philadelphia, as seen in the rivalries between the New York Mets and the Philadelphia Phillies in Major League Baseball, the New York Giants and the Philadelphia Eagles in the National Football League, and the New York Rangers and the Philadelphia Flyers in the National Hockey League. There is also a rivalry between the New York Knicks and