Vancouver:Top seed Sania Mirza inched closer to her second consecutive ITF singles title, advancing to the semifinals of the USD 75,000 tournament here but not before facing a spirited fight from unseeded Rebecca Marino.
Sania had to dig deep into her reserves to edge past the local favourite 7-6(2), 6-7(3), 6-4 in the quarterfinal of the hard-court tournament.
The Indian will now fight it out with another unseeded local Sharon Fichman for a place in the final.
Fichman beat compatriot Marie-Eve Pelletier 6-2, 6-1 in the other quarterfinal.
Sania had won the Lexington Challenger tournament recently.