From Zimmerman at Beyond the Boxscore via Rob Neyer.
Shows that the White Sox paid considerably less $ to the DL than any other team from 2002-2009. One of the article's conclusions:
"Teams should figure out what the White Sox are doing to prevent injuries. They are amazingly good."
This could go a long way towards explaining the Sox tendency to beat stat-based projections more often than not over that span.
Or it could just be a coincidence. Or a huge jinx.