Sania Mirza and her American partner Vania King rallied from a set down to beat the Spanish pair of Nuria Llagostera Vives and Arantxa Parra Santonja and enter the semi-finals of the Morocco Open at Fes.

The top seeded pair won a thrilling match 3-6, 6-2, 10-5 to set up a meeting with the French-Venezuelan pair of Camille Pin and Milagros Sequera for a place in the final of the US $145,000 Tier IV event.

Sania and Vania, who were expected to pull off an easy win against their unseeded opponents, were in for a shock as Nuria and Arantxa outplayed them in the opening set to seize the initial advantage.

However, the Indo-US pair came back strongly to clinch the second set and take the match into the third set tie-breaker, where Sania and Vania held their nerves to come out tops.

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