The Indian School of Business (ISB), Hyderabad, has won the 'Annual Case Study Competition 2011’, an initiative under the aegis of internet products company Directi, at Mumbai. The team 'DateRide – Goodfellas' from ISB won the competition and a prize of Rs 1 lakh at the grand finale on January 5. The contest was spread over four months and saw over 1,100 participants across 42 teams from 20 management schools .