Rohan Bopanna in semis

Unseeded Rohan Bopanna continued his dream run, scalping fifth seeded Manoj Mahadevan to romp into the men's singles semi-finals in the senior National grasscourt tennis championships in Calcuatta on Thursday.

The Karnataka lad, who stunned second seed Vijay Kannan in the opening round, rode on his powerful serves to put it across his higher ranked Tamil Nadu opponent in straight sets 7-6 (7-4), 7-6 (7-3) after a 92-minute fight at the Calcutta South Club lawns.

The 20-year old will now take on third seed Vishal Uppal, who overcame a stiff first set resistance before showing the door to wild carder and local boy Anand Radhakrishnan 7-6 (7-4), 6-2 in another quarter-final.

Men's top seed Tamil Nadu's Vinod Sridhar survived a close call to prevail over sixth seed Sourav Panja of the host state 6-4, 4-6, 7-6 (9-7) in a thriller and settle for a last four clash with seventh seed Mustafa Ghouse, who put behind a second set setback to pip unfancied Kedar Shah 6-3, 3-6, 6-3.

In the women's singles, defending champion and sixth seed Radhika Tulpule went down to third seed Tamil Nadu'a Rushmi Chakravarti 7-6 (7-5), 2-6, 2-6 in another last eight exchange.

Chakravarti will meet second seed Maharashtra's Sonal Phadke, who edged out seventh seed Geetha Manohar 6-7 (9-11), 6-4, 6-0.

The other women's semi-final will pit top seed Manisha Malhotra of Maharashtra, who snuffed out a feeble challenge from eighth seeded Krishma Patel (Gujarat) 6-3, 6-2, with fifth seed Chandigarh girl Shruti Dhawan, who had a cakewalk 6-0, 6-4 win over unfancied Liza Pereira (Maharashtra).