Hello again! A comprehensive 6-2 6-1 7-5 victory for Richard Gasquet over Bernard Tomic on Suzanne Lenglen. The ground staff are sweeping the Australian's splattered body from the red dirt in readiness for the arrival of Andy Murray so the Briton's match should be under way soon. Murray, of course, could meet Gasquet in this tournament.

We're going to park the live text bus for a few hours and return when Andy Murray is ready to take on Andrey Golubev. That match is scheduled third on Suzanne Lenglen and is expected to start at around 16:00 BST, but you can never be too sure about these things.

We'll let you know when the engines will start revving again for the start of the second part of today's road trip, but in the meantime you can keep up to date with the latest women's singles scores and men's singles scores on this very website. Bye for now.

Another seed crashes out as 11th seed Grigor Dimitrov falls in straight sets to Ivo Karlovic. A 6-4 7-5 7-6 (7-4) defeat for the Bulgarian.

Image source, Reuters

C'est incroyable! Kristina Mladenovic easily collects three match points and jumps for joy as she watches Li Na balloon a return long. The 21-year-old is in tears, and those who have bothered to turn up on Lenglen are on their feet. A 7-5 3-6 6-1 win for the Frenchwoman against the former champion.

Li Na needs to dig deep and she does, saving a couple of break points, but Kristina Mladenovic grabs a third break point and the 21-year-old, this time, takes her chance. The former champion looks to be heading out of the tournament. France's Mladenovic leading 5-1 in the decider.

Former world number one Lleyton Hewitt is a break down to Argentine Carlos Berlocq in the third set, the pair are tied at one set all. Back on Lenglen, Kristina Mladenovic is closing in on a shock victory over Li Na as she is leading the second seed 4-1 in the third set.

Image source, Reuters

Bulgarian Grigor Dimitrov is in a spot of bother on Court One, with the man some call 'Baby Fed' two sets down to Croatia's Ivo Karlovic. It's with serve in the third set at 5-5.

Another big name going through a dip is Li Na because the second seed has just been broken by France's Kristina Mladenovic in the deciding set. Yikes. The home crowd are cock-a-hoop.

A number of matches have finished so let me briefly tell you about them. Anastasia Pavlyuchenkova, the 24th seed, beat the 43-year-old Kimiko Date-Krumm 6-3 0-6 6-2, while Svetlana Kuznetsova got the better of Sofia Shapalava 6-3 6-1.

There were also straight-set wins for Camila Giorgi and Alison Riske and Kiki Bertens.

It's lucky number 11 for Watson, who has now won 11 matches this month alone following victory at the Prague Open. Things will get tougher from here on in, though, as the 22-year-old will next face Romanian fourth seed Simona Halep - a semi-finalist last year. Gulp.

Simon Briggs
Daily Telegraph tennis correspondent on BBC Radio 5 live sports extra

"There were a lot of very solid skills on show, the mentality was good, Zahalova asked a lot of questions of her game, but Watson stayed positive. She responded in that last deuce with some really good serving. that's the indication of a woman who can take the pressure."

Simon Briggs
Daily Telegraph tennis correspondent on BBC Radio 5 live sports extra

"When you have been in that tortuous position of seeing your ranking fall away, when you then have these moments, you can appreciate them all the more. You can see it meant a lot to her. It must be her first Grand Slam win since the illness. It's been a tough road back, She has developed her game in a courageous manner."

All Watson has to do is hold serve in front of a few hundred people, and a handful of photographers and cameramen, but anxiety grips the Brit. Watson cautiously approaches the net and watches a Zahlavova forehand winner fly by for a nervy opening. The British number two falls 15-30 behind, but Zahlavova cannot turn the screw and the Czech proceeds to net a straightforward forehand to present Watson with match point. It's an opportunity missed by Watson. A second match point, a third match point - and eventually victory is hers as Zahlavova fails to negotiate the barrier.

Image source, Getty Images

Zahlavova refuses to make life easy for Watson and the Czech, for once, keeps her cool to comfortably hold to love, ensuring Watson must serve out for the match.

Watson counter-punching from the net - a volley, an overhead, then another volley before her rival is finally beaten. Zahlavova responds by punishing a meek Watson second serve, but the Czech cannot maintain such high standards, spraying her groundstrokes out of play and Watson holds to 15.

Wonderful defending from Watson, a lob forcing her opponent to backpedal and the Czech crumbles like a chocolate flake. Zahlavova, frothing at the mouth, exchanges words with the umpire but it does her no good as Watson easily collects double break points. Trumpets playing in the background and there could soon be fanfare for the Brit as Zahlavova's forehand drifts wide, putting Watson firmly in the driving seat.

A beautifully-crafted opening point from Watson, finished with a sliced drop shot. Another irritable monologue from the combustible Zahlavova, and this time she kicks the red dirt in frustration, too. No-one say a word, just let her get it all out.

The world number 63 feels things aren't going her way, and they aren't really as a humdinger of an ace out to the wings takes the score to 40-15 and Watson, oozing confidence, concludes the game with a fabulous backhand down the line.

The pendulum swinging this way and that but, for the majority of this match, Watson's game has been the more solid and reliable. Zahlavova again in iffy territory, losing the opening two points, but she drags herself back into contention, lobbing a stranded Watson for 30-30. The Czech's supporters chant their approval, but Watson rallies and gobbles up a poor first serve for a break point but the Brit is as ruthless as a dormouse in this game, netting on three occasions to allow her rival to skip ahead for the first time in the set.

The match enters its second hour and a fine volley from Zahlavova sets her up nicely to steal a point and go 15-30 up, but those moments of magic are rare from the Czech and on the following point she messes up again, punching the air in frustration and shouting towards her hubby as the score progresses to 30-30. From bad to worse for Zahlalova as she squanders a break point, but she's soon on the up again - a deft drop shot for second break point and Watson creaks, screwing a backhand wide.

Image source, Reuters

Romania's Simona Halep needed just over an hour to see off Russian Alisa Kleybanova for the loss of just two games and set up a second-round match against either Heather Watson or Barbora Zahlavova Strycova.

Elsewhere, Chinese second seed Li Na is locked at 5-5 in the first set of her first-round contest with Kristina Mladenovic of France.

And 43-year-old Kimiko Date-Krumm of Japan, who made her Roland Garros main draw debut in 1989, is rolling back the years and fighting back against 24th-seeded Anastasia Pavlyuchenkova, winning the second set 6-0 to force a decider.

Latest women's singles scores and men's singles scores

Zahlavova manages to put her troubles behind her, for this game at least, racing to a 40-0 lead and securing a hold to 15 with a smart serve volley. Watson still in control of her own destiny, though.