 Novak Djokovic easily beat 15-seeded Holger Ruhn 6-3, 6-4, 6-2 in just over two hours Monday night to reach the Wimbledon quarterfinals that he made sure to get a shot to the fans he thought were rooting against him. Ruhn's supporters at various tournaments will often stretch out his last name, saying Ruhn, which sounds similar to Boo.