I don't know about the top 10, but here are five of the very largest ones. Most of these numbers are from 2010 but a few of them are from 2008/9.
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I can answer that according to each sport competition revenue.
1- NFL returned 7.8 bill $ in 2009
2- MLB returned 6.8 bill $ in 2009
3- NBA returned 4..0 bill $ in 2009
4-The English premier league returned 3.2 Bill $ in 2009
Please note that the World cup 2010 in south Africa returned a revenue estimated by 3.8 Bill $ in nearly 1 month time.
I don't know about the top 10, but here are five of the very largest ones. Most of these numbers are from 2010 but a few of them are from 2008/9.