<Table> <Tr> <Th> Length </Th> <Th> Team </Th> <Th> Seasons </Th> </Tr> <Tr> <Td> 17 of 18 </Td> <Td> New York Yankees </Td> <Td> 1995--2007, 2009--2012 </Td> </Tr> <Tr> <Td> 15 of 18 </Td> <Td> New York Yankees </Td> <Td> 1947, 1949--1953, 1955--1958, 1960--1964 </Td> </Tr> <Tr> <Td> 7 of 8 </Td> <Td> New York Yankees </Td> <Td> 1936--1939, 1941--1943 </Td> </Tr> <Tr> <Td> 6 of 7 </Td> <Td> Cleveland Indians </Td> <Td> 1995--1999, 2001 </Td> </Tr> <Tr> <Td> 6 of 7 </Td> <Td> St. Louis Cardinals </Td> <Td> 2000--2002, 2004--2006 </Td> </Tr> <Tr> <Td> 6 of 7 </Td> <Td> Boston Red Sox </Td> <Td> 2003--2005, 2007--2009 </Td> </Tr> <Tr> <Td> 6 of 7 </Td> <Td> St. Louis Cardinals </Td> <Td> 2009, 2011--2015 </Td> </Tr> <Tr> <Td> 6 of 8 </Td> <Td> Philadelphia Phillies </Td> <Td> 1976--1978, 1980--1981, 1983 </Td> </Tr> <Tr> <Td> 6 of 8 </Td> <Td> Anaheim / Los Angeles Angels </Td> <Td> 2002, 2004--2005, 2007--2009 </Td> </Tr> <Tr> <Td> 5 of 6 </Td> <Td> Baltimore Orioles </Td> <Td> 1969--1971, 1973--1974 </Td> </Tr> <Tr> <Td> 5 of 6 </Td> <Td> Pittsburgh Pirates </Td> <Td> 1970--1972, 1974--1975 </Td> </Tr> <Tr> <Td> 5 of 6 </Td> <Td> Kansas City Royals </Td> <Td> 1976--1978, 1980--1981 </Td> </Tr> <Tr> <Td> 5 of 6 </Td> <Td> New York Yankees </Td> <Td> 1976--1978, 1980--1981 </Td> </Tr> <Tr> <Td> 5 of 7 </Td> <Td> Cincinnati Reds </Td> <Td> 1970, 1972--1973, 1975--1976 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> Chicago Cubs </Td> <Td> 1906--1908, 1910 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> Philadelphia Athletics </Td> <Td> 1910--1911, 1913--1914 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> St. Louis Cardinals </Td> <Td> 1942--1944, 1946 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> Brooklyn Dodgers </Td> <Td> 1952--1953, 1955--1956 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> Oakland Athletics </Td> <Td> 1988--1990, 1992 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> Toronto Blue Jays </Td> <Td> 1989, 1991--1993 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> Houston Astros </Td> <Td> 1997--1999, 2001 </Td> </Tr> <Tr> <Td> 4 of 5 </Td> <Td> Minnesota Twins </Td> <Td> 2002--2004, 2006 </Td> </Tr> <Tr> <Td> 4 of 6 </Td> <Td> Tampa Bay Rays </Td> <Td> 2008, 2010--2011, 2013 </Td> </Tr> <Tr> <Td> 4 of 6 </Td> <Td> Washington Nationals </Td> <Td> 2012, 2014, 2016--2017 </Td> </Tr> <Tr> <Td> 3 of 4 </Td> <Td> Boston Red Sox </Td> <Td> 1915--1916, 1918 </Td> </Tr> <Tr> <Td> 3 of 4 </Td> <Td> St. Louis Cardinals </Td> <Td> 1928, 1930--1931 </Td> </Tr> <Tr> <Td> 3 of 4 </Td> <Td> Los Angeles Dodgers </Td> <Td> 1963, 1965--1966 </Td> </Tr> <Tr> <Td> 3 of 4 </Td> <Td> Texas Rangers </Td> <Td> 1996, 1998--1999 </Td> </Tr> <Tr> <Td> 3 of 4 </Td> <Td> Arizona Diamondbacks </Td> <Td> 1999, 2001--2002 </Td> </Tr> <Tr> <Td> 3 of 4 </Td> <Td> San Francisco Giants </Td> <Td> 2000, 2002--2003 </Td> </Tr> <Tr> <Td> 3 of 4 </Td> <Td> Los Angeles Dodgers </Td> <Td> 2006, 2008--2009 </Td> </Tr> </Table> <Tr> <Th> Length </Th> <Th> Team </Th> <Th> Seasons </Th> </Tr> <Tr> <Td> 17 of 18 </Td> <Td> New York Yankees </Td> <Td> 1995--2007, 2009--2012 </Td> </Tr> <Tr> <Td> 15 of 18 </Td> <Td> New York Yankees </Td> <Td> 1947, 1949--1953, 1955--1958, 1960--1964 </Td> </Tr>

How many mlb teams have won the world series back to back