Tennis match fixing?

Italian tennis player Giorgio Galimberti was found guilty of betting on tennis matched and was suspended for 100 days and fined $35,000. While there was no mention of whether he bet on his own matches. However, with all the scandals in the sport world, why would we think the positive? An NBA referee was busted for betting on games and then there is always Pete Rose. What area of sport is not tainted these days?
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