UPDATE1-Tennis-Wimbledon-Ivanovic little troubled by De Los Rios

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By Ori Lewis

LONDON, June 23 (Reuters) - Serbian top seed Ana Ivanovic had little trouble advancing to the second round at Wimbledon, beating Rossana De Los Rios of Paraguay 6-1 6-2 in under an hour on Monday.

French Open champion Ivanovic, who reached the semi-finals here last year, had far too much power for her 103rd-ranked opponent, belting winners at will from the back of the court.

Ivanovic, 20, wrapped up the first set with little answer from the 32-year-old Paraguayan, her blistering groundstrokes off both sides proving too testing. De Los Rios held her opening serve to take an early lead in the second set but Ivanovic was never troubled.

De Los Rios, who was watched by her 11-year-old daughter, Ana Paula from the players' box, prolonged the end slightly when she successfully challenged an Ivanovic serve on match point which was called an ace.

The respite was short-lived, however and the Serbian favourite wrapped up the match to claim her place in the second round where she will meet France's Nathalie Dechy.

"I think I played quite well today, considering it's the first match. Especially first match on the grass. It's quite a big change but I was very happy to be back on Centre Court," Ivanovic said.

"Today's match was a tough one... I had to stay focused. I served really well and that's something that really help me. I was quite aggressive, so I was pleased with the way I played," she added. (Editing by Clare Lovell)