Noticed this the other day and thought it was pretty interesting; in the past 10 years only 1 MLB team has one the World Series more than once. The Boston Red Sox in 2004/2007. I love this trend because it gives almost every team "hope" that they can win it all.
The List:
2010 San Francisco Giants
2009 New York Yankees
2008 Philadelphia Phillies
2007 Boston Red Sox
2006 St. Louis Cardinals
2005 Chicago White Sox
2004 Boston Red Sox
2003 Florida Marlins
2002 Anaheim Angels
2001 Arizona Diamondbacks
The NBA is the total opposite. For example; the Western Conference champion has been one of 3 teams, the Mavericks, Spurs or Lakers since 1999, 13 YEARS!
1999 San Antonio Spurs
2000 Los Angeles Lakers
2001 Los Angeles Lakers
2002 Los Angeles Lakers
2003 San Antonio Spurs
2004 Los Angeles Lakers
2005 San Antonio Spurs
2006 Dallas Mavericks
2007 San Antonio Spurs
2008 Los Angeles Lakers
2009 Los Angeles Lakers
2010 Los Angeles Lakers
2011 Dallas Mavericks
In the past 28 years (since 1984) only 8 teams have won an NBA Championship; half of those coming from 2 teams:
Los Angeles Lakers (8)
Chicago Bulls (6)
San Antonio Spurs (4)
Boston Celtics (3)
Detroit Pistons (3)
Houston Rockets (2)
Miami Heat (1)
Dallas Mavericks (1)
The Atlanta Hawks have a pretty good team, but it would be a complete shocker if they were to get past the Celtics or Heat. I know that, they know that and that's just the way it is.