What is the highest payout for a single sporting event?

Define a "sporting event".

Theres probably little to beat Jamie Golds $12.5m win in the World Series of Poker in 2006.

For a team event its probably the Standford series in a tweny20 game of cricket in 2008 between England and Standford superstars (a mixed Caribbean team) where the winning team shared $20m with the losers receiving nothing.