Laura Robson winning battle against chest infection

Laura Robson says she has almost fully recovered from a chest infection that has affected her since London 2012.

The British number two revealed she was struggling with the problem, following her defeat in Dubai last week.

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It's always tough playing when you're ill - it was my decision to play in Doha and Dubai

Laura Robson

"The infection is in the process of clearing up - I'll be fine for Indian Wells in March," the 19-year-old said.

"I've had another course of antibiotics and I'm as good as new. It's always tough playing when you're ill - it was my decision to play in Doha and Dubai."

Robson is looking to compete in Miami and Charleston, before joining her Great Britain team-mates for the World Group II play-off Fed Cup tie against Argentina in mid-April.

Earlier on Tuesday, her compatriot, Anne Keothavong, was knocked out of the first round of the Brazil Cup after a straight-sets defeat by number seven seed Kristina Mladenovic.

Keothavong, ranked 125 places below world number 58 Mladenovic, was beaten 6-3 6-4 by the Frenchwoman.

The loss comes a day after former British number one Keothavong rose two places in the world rankings to 183.

Top seed Venus Williams , the favourite for the title, beat Mirjana Lucic-Baroni 6-3 6-3 in the first round.

Britain's Johanna Konta, ranked 155 in the world, failed to reach the main draw in Acapulco, Mexico.

Konta beat Swiss Amra Sadikovic 6-2 6-0 in her opening qualifier but lost 4-6 6-1 6-2 to Colombian Catalina Castana in the second qualifying round.