In the girls singles pre quarterfinals, unseeded Shrivalli, who upset third seed Shivani Ingle yesterday, shocked 16th seed Humera Shaikh of AP 6-4 6-3.
Maharashtra girl Pareen Shivekar, who knocked out sixth seed Prinkle Singh of Jammu and Kashmir yesterday, ousted tenth seed Yubrani Banerjee 6-4 6-3 to move into the last eight.
Also moving into the boys' semi final with upset win was Calvin Golmei Naithaolin of Chandigarh who upset sixth seed Sumit Pal Singh of J & K 6-3 6-3.
Seventh seed Sivadeep Kosaraju of Tamil Nadu ended the run of qualifier Nikit Reddy of Karnataka leading 6-1 5-2 before Reddy conceded the tie.
Third seed Parikshit Somani of Assam outplayed eighth seed Suresh Dhakshineswar of Karnataka 6-1 6-1 to complete the semi final line-up.