Doesn't seem like there is a lot of discussion of tennis betting here, but I thought this was quite interesting in the wake of the NBA scandal.
http://sport.guardian.co.uk/tennis/story/0
Looks like Davydenko tanked the match, and people in the know bet heavily on his opponent.
Seems to me that betting so much that the line became obviously unrealistic was a very stupid thing to do if that is indeed what happened.
Will be interesting to see what the investigation uncovers.
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fixed your link -P