 Novak Djokovic easily beat 15th-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, and that happened again Monday.