Djokovic returns a forehand during a practice session in Rome, Italy./Credit: CLIVE BRUNSKILL/AFP/POOL/AFP via Getty Images
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Novak Djokovic doesn't think he'll 'ever forget' disqualification from US Open
Novak Djokovic says his disqualification from the US Open has been a "big lesson" but admits the he doesn't think he will "ever forget about it."
