India's Sania Mirza remained on course for yet another ITF title when she sailed into the semi-final of the Boca Raton Winter Classic ITF World Ranking Tennis tournament�at Florida, USA.

The Wimbledon girl's doubles champion�beat Ekaterina Afinogenova of Russia 7-5, 6-3 to enter the last four.

The Hyderabad lass, teaming up with Natallia Dziamidzenka of Belarus, has also reached the doubles semi-final.