While Harmeet Desai got the better of Brazilian Thiago Monteiro 4-3 (11-6 8-11 11-9 5-11 9-11 11-8 11-9) in a tough battle to grab a semi-final spot in the men's singles, Manika Batra and Ankita Das made the last four stage in the women's singles.
Anita, who faced compatriot Suthirtha Mukherjee in the quarters, emerged victorious with a 4-2 (8-11 12-10 11-9 7-11 11-3 11-8) scoreline, while Manika registered a comfortable 11-4 11-7 9-11 11-9 11-5 win over Jissica Yamada of Brazil to enter semifinals.
Ghosh had earlier beaten host paddler Israel Barreto in straight games to move into the quarterfinals.
Earlier, both G Satiyan and Nitin Vasanth Philips had exited in the round of 16, losing to Thiago Monteiro and Cazuo Matsumoto, respectively. Kritiwica Sinha Roy too lost 2-4 to Jessica Yama in a gruelling battle in the pre-quarterfinals.
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Desai played exceptionally well to win his pre-quarterfinal and quarterfinal matches, both of which went to the wire. He had outlasted Brazilian Humberto Manhani 4-3 in pre-quarters.
Manika will take on Elizabeta Samara of Roumania in the semis, while Ankita will meet Brazilian Caroline Kumahara.