Sumit sailed into the pre-quarterfinals of the AIBA men’s World championships on Saturday notching up a 5-0 victory over Tajikistan’s Abdumalik Boltaev. Sumit, however, copped a warning in the second round for hitting Boltaev on the back of the head repeatedly despite being cautioned by the referee. In a late night bout on Friday, Nishant Dev rallied to defeat Mauritian …