The 23-year-old Yamalapalli, a wild card entrant and ranked 336, had chances against the 162nd ranked and 20-year-old Polina Kudermetova of Russia but blew them away to suffer a 6-1 3-6 5-7 defeat in a close to two hours contest.

Bhosale, another wildcard entrant, showed a lot of promise initially before losing to eighth seed Katie Volynets of USA earlier in the day. The 22-year-old American beat the 27-year-old Indian 7-6(8) 2-6 6-1 in just under three hours to advance to the last-eight round.

Volynets has now defeated a second successive Indian opponent after having beaten India No. 1 Ankita Raina in the opening round. In the quarterfinals, Volynets will take on South Korea' Sohyun Park, who defeated Italy' Camilla Rosatello 6-3 5-7 6-3.

Meanwhile, Russian teen sensation Alina Korneeva has withdrawn from the competition. The 16-year-old Korneeva, winner of two Grand Slam girls' singles titles, is down with a viral illness and will not take on Australian Storm Hunter in the quarterfinals.

In doubles action, India's top-ranked doubles player Prarthana Thombare and her Dutch partner Arianne Hartono stormed into the semifinals.

The unseeded duo registered a comfortable 6-4 6-2 win over the Greek-Aussie combination of Sapfo Sakellaridi and Olivia Tjandramulia to set up a semifinal clash against Sohyun Park and Zhibek Kulambayeva.