Olympic-qualified Vikas Krishan in 69kg and Shiva Thapa in 56kg assured India of at least two bronze medals at the 43rd men's and women's Boxing Grand Prix after reaching 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.But there was disappointment for other Indians. 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 itself.The women drew a blank in the event with Asian Games bronze medallist Kavita Goyat in 75kg, Van Lal Duati in 51kg and Preeti Beniwal in 60kg losing in the first round of their competition.The tournament, being organised by Czech Boxing Association, features over 130 boxers.