Dementieva delight

Fourth-seeded Elena Dementieva routed fellow-Russian Regina Kulikova 6-1, 6-2 to reach the fourth round at Wimbledon.

Fourth-seeded Elena Dementieva routed fellow-Russian Regina Kulikova 6-1, 6-2 to reach the fourth round at Wimbledon.

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The 27-year-old Dementieva needed just 59 minutes to dispatch Kulikova on Court one on Friday, battering the qualifier with heavy winners from both sides.

The 191st-ranked Kulikova made her Grand Slam main draw debut at Wimbledon and beat Karolina Sprem and 27th-seeded Alisa Kleybanova in the previous rounds.

But Dementieva was too strong, quickly taking a 5-0 lead in the first set and breaking twice in the second set.

Federer drops set, advances

ROGER FEDERER lost a set for the first time this week but advanced to the second week at Wimbledon by beating Philipp Kohlschreiber 6-3, 6-2, 6-7 (5), 6-1. Federer was a break up in the fourth set before losing his focus, and two errant forehands cost him the tie-breaker. That merely extended his Centre Court workout by half an hour, and he earned a berth in the fourth round Monday against a familiar foe -- Robin Soderling, who overcame Spains Nicolas Almagro 7-6(7), 6-4, 6-4.

Now Federer, who has a 10-0 record against Soderling, seeks his sixth Wimbledon title.

Federer played with the new retractable roof open for a fifth consecutive day, despite rain in the forecast.

Karlovic slams 46 aces

Ivo Karlovic of Croatia has hit 46 aces in a third-round upset of No. 9-seeded Jo-Wilfried Tsonga of France. The 22nd-seeded Karlovic never faced a break point Friday and ended his 7-6 (5), 6-7 (5), 7-5, 7-6 (5) victory over the 2008 Australian Open runner-up with an ace.

He will play No. 7 Fernando Verdasco of Spain in the fourth round. Karlovic, the tour leader in aces in 2009, hit a modern-era record 55 in a loss at the French Open last month.