Three-time Grand Slam champion and world number three Simona Halep Angelique Kerber came through tough tests on Thursday to reach the Qatar Open semi-finals. Also through are Elina Svitolina and Elise Mertens, providing some comfort for tournament organisers who have somehow ended up with three of the world's top 10 in the last four, despite a high number of prominent withdrawals.

Halep won in straight sets but needed two tie-breaks -- 7-6 (7/1), 7-6 (8/6) -- to edge past Germany's Julia Goerges, despite racing to a 4-0 lead in the first set. However, the match turned out to be anything but routine for the Romanian who was forced to save two set points and break Goerges' serve in the 10th game to stay in the second set. Halep said "I am very happy, honestly,". Further added that "It's been a really tough match and it is always tough to play against her."

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The Romanian will play Svitolina, ranked seventh in the world, in the last four on Friday. Halep has lost her three last matches against the Ukrainian, failing to win a single set in those matches, stretching back to 2017. Svitolina was the first player through to the semi-finals, beating Czech qualifier Karolina Muchova by contrast in easy fashion 6-4, 6-2.

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Svitolina said "I found a way to have to beat her,". Further added "I was very happy I could do it in two sets." She was followed on court by Kerber, the world number six, who won 1-6, 6-2, 7-6 (7/4) in a tough and feisty encounter against another Czech, Barbora Strycova, who was given a time violation in the final set. It will be Kerber's first semi-final since she won at Wimbledon last year. She will play Belgium's Mertens, the world number 21, in the last four, who beat Kiki Bertens of the Netherlands 6-4, 6-3.