Robson makes early exit
Great Britain's Laura Robson crashed out of the Qatar Open in the first round after a straight-sets defeat to Daniela Hantuchova in Doha.
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The world number 45 lost 6-4 6-1 to her Slovakian opponent, who needed just one hour and 16 minutes to progress to the second round.
Hantuchova's serve was a major weapon as she sent down sent down six aces, while she broke the Brit six times.
Robson, who helped GB progress in the Fed Cup in nearby Israel last week, struggling with a cough during the contest.
Meanwhile, Sloane Stevens is hopeful she can reach the levels of performance in Qatar that she did on her way to the semi-finals of the Australian Open.
The American eased into the second round on Tuesday after she beat Anna Tatishvili 6-2 6-2 in a little over an hour to set up a clash with Czech competitor Klara Zakopalova.
"I felt good," said the 16th seed on the WTA website. "I hadn't really been serving since my ab was a little sore, so I didn't serve that great today. And actually last weekend I got like a stomach virus or something like that, I don't know what I had - but other than that it was good. I'm just happy I can play now.
"I just go out there and do the same things as I did the first week of Australia, second week, even third week.
"I just have to go out and play. You start thinking about all those other things and it's just going to make you crazy. So I just try to go out and play. Who knows?
"I hadn't played since Melbourne, so coming out and playing a good player today, I just had to play my game. I just had to play solid. And that's what I'll try and do for the rest of the tournament."
Number two seed Serena Williams is already through to round three after she won 6-2 6-1 against Daria Gavrilova and she is joined by third seed Maria Sharapova, who beat qualifier Carolina Garcia 6-3 6-2.
Garcia registered eight double faults while, by contrast, Sharapova impressed on centre court with her first serve, winning 68 per cent of the points.
Marion Bartoli is through to round two to face Svetlana Kuznetsova after she rallied from 5-2 down in the first to win 7-6 (7/5) 6-3 against Francesca Schiavone.
Mona Barthel shocked number five seed Angelique Kerber 6-1 6-2, although three other seeds - Nadia Petrova, Roberta Vinci and Lucie Safarova - advanced.
However, 12th seed Maria Kirilenko was forced to retire when trailing 3-0 in the first set against Russian qualifier Ekaterina Bychkova.
Other winners in the first round were Ekaterina Makarova, Zakopalova, Hsieh Su-Wei, Sorana Cirstea, Urszula Radwanska, Christina McHale, Monica Niculescu, Romina Oprandi and Timea Babos.