The German qualifier followed up his surprising win over the two-time Wimbledon champion with a 6-4, 7-6 (3), 4-6, 6-3 loss to 22nd-seeded Viktor Troicki of Serbia on Saturday in the third round. [...] Brown's play at the net troubled Nadal throughout their match, and sent the Spaniard home early for the fourth year in a row. Federer has won the Wimbledon title seven times, and one more would give him the record for most men's singles titles at the grass-court Grand Slam tournament. For the women, defending champion Petra Kvitova was to face former top-ranked player Jelena Jankovic of Serbia, also on Centre Court.