By Phil Casey, PA Sport

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Tim Henman was still not entirely convincing but did enough to book his place in the third round at Wimbledon on Thursday.

Henman beat France's Michael Llodra in straight sets on Centre Court, but hardly imposed himself on the qualifier.

The 10th seed won 6-4 6-4 6-3 and faces his third qualifier of the championships in unknown Swede Robin Soderling in the last 32.

But the British number one still has plenty of room for improvement with Llodra taking just two of the 11 break points he created.

World number one Andre Agassi was made to toil in the sun before beating Lars Burgsmuller in round two at Wimbledon 2003.

Burgsmuller, ranked 88 in the world, put up some stout resistance before losing the opening set 6-3 but paid the price for a careless opening game in which he lost his serve.

Agassi was back in charge in the third set, taking control early to close out the match 6-3 and book a third-round clash with 27th seed Younes El Aynaoui.

Defending women's champion Serena Williams overcame the plucky resistance of Belgian challenger Els Callens to take their clash in straight sets.

Williams, who needed two tie-breaks to overcome the same opponent in the last 32 last year, was again made to fight hard to get on top.

The only break of serve in the first set came midway through it when Williams took the second of three break points with an inch-perfect forehand.

French Open champ Ferrero, much more at home on clay, lost the first set 7-5 in the tie-break.

But the Spaniard hit back to take the second set 6-3 and level the match.

And just after he'd won the third by the same score to nudge ahead, Escude retired through injury.

Women's third seed Justine Henin-Hardenne had her serve broken three times before romping through a tie-break 7-2 for the first set against Wimbledon debutant Flavia Pennetta of Italy.

It took the Belgian 50 minutes to snatch a 1-0 advantage, and although Pennetta's service was never a real threat, the Italian's ground strokes kept the much better known player at full stretch.

That tie-break appeared to break Pennetta's spirit and Henin-Hardenne raced into a 5-0 lead in the second set before closing it out 6-1 to take a place in the next round.

Mary Pierce rolled back the years to knock women's 14th seed Eleni Daniilidou out in round two.

The Frenchwoman, once a fixture in the top 10 but now ranked way down at 86 in the world, progressed to round three with an upset win over her Greek opponent.

Pierce won the first set 6-4 after a tense battle but raced through the second 6-1 to clinch victory.

The Argentine, seeded six this time, took the first set 6-2 on Court One and following up by winning the second 7-5.

He raced through the third 6-2 to progress, and is on target to meet Henman in round four.

Women's eighth seed Jennifer Capriati took her expected place in the next round with an easy win over Marie-Gaianeh Mikaelian of Switzerland.

She took the first set 6-2 and added the second 6-1.

The women's number 10 seed, Anastasia Myskina, is also through to round three.

She beat fellow Russian Lina Krasnoroutskaya 6-1 6-4.

Next Myskina will play former champion Conchita Martinez, winner over Austria's Barbara Schett on Thursday.

Another Russian to progress was the 15th seed Elena Dementieva who routed Spaniard Arantxa Parra 6-1 6-1.

Men's 11th seed Jiri Novak is through to round three after a regulation straight-sets defeat of Spain's David Ferrer.

The man from the Czech Republic won it 6-2 7-5 6-3.

Former women's semi-finalist Jelena Dokic, given such a hard time by Britain's Elena Baltacha in round one, had it easier against Emmanuelle Gagliardi on Thursday.

The 11th seed won 6-1 6-3 in round two to progress to a clash with new pin-up girl Maria Sharapova.

She was again highly impressive in crushing 21st seed Elena Bovina in straight sets.