Emma Raducanu retires in Qatar opener after on-court blood pressure test

• Briton forced to pull out when 2-0 down in deciding set

• Qualifier Camila Osorio into Qatar Open second round

Emma Raducanu retired during the third set of her first-round match with the qualifier Camila Osorio at the Qatar Open, having tried to play on after taking a medical timeout.

The British No 1 was looking to move swiftly on from the disappointment of losing in straight sets on Saturday against the home ­favourite Sorana Cirstea in the ­Transylvania Open final, a match she described as “very difficult emotionally and physically”.

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