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Jelena Ostapenko booked her spot in the Dubai Duty Free Tennis Championships semi-finals on Thursday
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The Latvian 24-year-old overcame Petra Kvitova in three sets in a see-saw battle that went all the way to a deciding tiebreak
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Two-time Wimbledon champion Kvitova had her chances to take the match - serving for victory in the second and third sets - but could not capitalise
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And world No. 25 Ostapenko prevailed 5-7, 7-5, 7-6 (11-9) in two hours and 39 minutes
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Kvitova took the first set - rallying from 3-0 down and was in command in the second
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But Ostapenko dug deep to turn things around, even saving match point in the tiebreak before seeing out the epic clash
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Veronika Kudermetova also advanced as she defeated Switzerland's Jil Teichmann
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Again the match went all the way after Teichmann fought back to level at one set all
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But Kudermetova held on for a 6-2, 5-7, 6-4 victory
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Ostapenko will now face Simona Halep, after the Romanian defeated Arab star Ons Jabeur in straight sets
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Try as she did, Tunisian eighth seed Jabeur could not break down the Halep game and lost 6-4, 6-3
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Halep is now two matches away from her third Dubai title
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Kudermetova will play Marketa Vondrousova for a place in the final. The Czech defeated Ukrainian Dayana Yastremska 7-5, 6-4
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