LUCKNOW, May 8 -- Qualifier Shreyant Mantesha of India punched his ticket to the boys' singles semi-finals of the ITF Junior J30 Lucknow Tennis Tournament, clinching a commanding yet nail-biting quarterfinal victory over compatriot Chukka Lakshya Vardhan in a double tiebreak thriller. The match, which unfolded on the courts of Vijayant Khand Stadium on Thursday, ended 6-7(3), 6-2, 7-6(6), showcasing Mantesha's resilience under pressure. Lakshya Vardhan drew first blood, edging the opening set via tiebreak with sharp serving. But Mantesha roared back in the second, dominating with relentless court coverage and aggressive baseline play to force a decider. The third set tiebreak tested nerves, yet Mantesha stayed composed, sealing the win and sparking cheers from the local crowd. The boys' singles quarterfinals brimmed with Indian prowess. Top seed Om Patel cruised past seventh seed Shaunak Chatterjee 6-1, 6-3 in a lopsided affair. Ribhav Saroha dismantled Varad Undre 6-3, 6-0, while qualifier Parthiv Nallagundla overwhelmed Lethesh S Kombila 6-1, 6-0, setting up an all-Indian semi-final showdown. In girls' singles, sixth seed Tejasvi Meneni survived a rollercoaster against Akshita Antil, winning 7-5, 4-6, 6-3 after trading sets. Nisha Enja mounted a fierce comeback from a 5-7 first-set loss to Riddhi Shinde, storming to 6-4, 6-0. Third seed Karthika Padmakumar and fourth seed Harsha Karthika Oruganti advanced routinely, both posting 6-1, 6-1 shutouts over Prarthana Khedkar and qualifier Shazfa Wania, respectively. Doubles action guaranteed all-Indian finals. In boys' semi-finals, Lakshya Vardhan and Paranjay Siwach outlasted Ahan Shetty and Ayan Shetty 7-6(8), 6-2. Ribhav Saroha and Aarav Chawla powered through Lethesh S. Kombila and Tejas Ravi 6-2, 6-3. Girls' duo Angel Patel and Riddhi Shinde reached the final with a solid 7-5, 6-3 upset over Australia's Trisha Jani and India's Tanushree Meneni Satish....