Teams well above the line have won more often than might be expected based on spending, while teams well below the line have won less often.

From 2001 to 2010, the Yankees spent 42 percent more than the second-highest spender, Boston, and have also won more games than any other team — 6 percent more than Boston. Some of the lowest-spending teams, like Kansas City and Pittsburgh, were also among the worst.

But there have also been some notable exceptions. Teams below the line, including Baltimore, Detroit and the Mets, have won less than might be expected. Teams above the line, including Florida, Minnesota and Oakland, have won more.

Black outlines indicate teams that won a World Series in the last decade. Boston won two, and the 2010 World Series has yet to be played.