Olympic-qualifier Vikas Krishan and Shiva Thapa assured India of at least two bronze medals in 69 kilogram and 56 kilogram categories at the 43rd men's Boxing Grand Prix. They reached the semifinals of the event in Usti nad Labem, Czech Republic. Vikas, a World Championship bronze medallist, outpunched Belarus' Dauhliavets Yauheni 13-2. He will now take on Cuba's Despaigne Arisnoide in the semifinal. Shiva, who has been picked in the team for next month's Asian Olympic Qualifiers in Kazakhstan, defeated Hungary's Nagy Kriztian 11-3. The promising Assam-lad will now face Czech Republic's Velky Patrik.The Olympic-qualified duo of Jai Bhagwan in 60kg and Manoj Kumar in 64kg and Sumit Sangwan in 81kg, who will represent India in the Asia Olympic qualifiers, lost in the first round. Indian women drew a blank in the event.