Gaurav in quarters
The unheralded Gaurav Bidhuri (56kg) advanced to the quarterfinals with an upset win but Shiva Thapa's quest for a second World Boxing Championship medal ended without exchanging a single blow as he was forced to withdraw due to food poisoning and fever.
Shiva, seeded fifth in the lightweight 60kg category, was to take on Georgia's Otar Eranosyan in his secondround bout after being given a first-round bye.
However, weakened by food poisoning and high fever, he was for forced to give a walkover in what would have been his opening bout.
"He was throwing up last night and this morning, he was running high fever as well. He couldn't have fought, his body was not holding up. We tried to do everything but he was very weak," an Indian team official told PTI.
Shiva had won a bronze medal at the 2015 World Championships in Doha.
Also making an exit from the tournament was Manoj Kumar (69kg). The former Commonwealth Games goldmedallist went down in a split verdict to fourth-seeded Venezuelan Gabriel Maestre Perez.
Perez had won a bronze in the 2013 World Championships and he is also a PanAmerican Games goldmedallist. The 31-year-old Manoj gave it his all and matched up to his higherranked rival quite well but could not get the judges' nod.
However, Gaurav ensured that India had something to celebrate. He got the better of Ukrainian Mykola Butsenko in an exhausting pre-quarterfinal bout late last night.
The Delhi-boxer, who got into the event on a wildcard after missing out on automatic qualification, held his nerves and matched his Butsenko punch for punch in a thoroughly engrossing contest.
The two boxers attacked each other relentlessly and expectedly the judges came out with a split verdict in favour of the Indian.
However, third seed and 2011 World Championships bronze-medallist Vikas Krishan (75kg) was ousted after a second-round loss. He bowed out after being bested by England's Benjamin Whittaker.
Also making an early exit was Asian silver-medallist Sumit Sangwan (91kg) who lost to Australia's Jason Whateley in a split decision.
Earlier, Gaurav came up with a determined performance against a rival representing one of international boxing's powerhouses.
Krishan, the two-time Asian Games medallist looked sluggish against his 19-year-old rival, who has been nicknamed 'The Future' in his country for the potential he has shown.
Whittaker's stronger legs helped him glide smoothly inside the ring, even as Vikas struggled to keep his balance after every attempted attack at the Englishman.
The Haryana-boxer did manage to hold his own in the first two rounds but Whittaker out-punched him comprehensively in the final three minutes to clinch a unanimous verdict in his favour.
Sumit competed in the last bout of the evening and lost after a strong start. He dominated the opening round but Whateley fought back in the next two to clinch the issue.
Unwell Shiva forced to withdraw from World Boxing C’ship