Sumit Sangwan failed the dope test after being tested positive for a banned substance.
Sangwan, 26, won the silver medal in 2017 Asian championship and made the World championship quarter-finals in 2016.
Sumit got off to a good start, courtesy his agility while dodging the opponent and powerful attacking technique that gave him the upper hand in the first two rounds.
The Indian men's boxing team's final campaign at the 35th Boxam International Tournament in Castellon, Spain was derailed by a positive COVID-19 case in the side, resulting in three withdrawals from the summit clashes.
Sumit Sangwan (91kg) and Nikhat Zareen (51kg) were among three gold medallists in India's stupendous campaign at the 56th Belgrade International Boxing Tournament in Serbia. India ended the tournament with three gold, five silver and five bronze medals.
Asian silver-medallist Sumit Sangwan (91kg) and former junior World champion Nikhat Zareen (51kg) were among eight Indian boxers to make the finals, while five others settled for bronze medals in the 56th Belgrade International Tournament in Serbia.
Olympic champion shooter Abhinav Bindra appealed to AIBA to help clean up the administrative mess in Indian boxing and pave the way for the country's pugilists to participate at the Rio Olympics under the national flag. Ever willing to boost the confidence of fellow athletes, Bindra visited the Indian boxing squad competing at the AIBA World Olympic Qualification tournament here and interacted with them individually.
Six-time world champion Mary Kom (51kg) lost to American Virginia Fuchs in a split decision after an exhausting contest that was also messy in equal measure.
In another disappointment for India, Iran's Meysam Gheslaghi defeated Sumit Sangwan in the men's light heavyweight (81kg) division in a late Monday night bout.
The Indian boxer defeated Tanzania's Haruna Mhando by a unanimous verdict.
Olympic bronze medallist Vijender Singh (75 kg) and Commonwealth Games gold medallist Paramjeet Samota (+91 kg) are among the Indian elite men boxers selected for the Asian Continental Olympics Boxing Qualification tournament to be held at Astana, Kazakhstan from April 5-12.
India's protest against the controversial opening-round loss of boxer Sumit Sangwan (81kg) on Monday at the London Olympic Games has been rejected by the jury that reviewed his bout against Brazilian Yamaguchi Falcao Florentino.
Indian pugilist Sumit Sangwan was a bit unlucky to crash out of the London Olympics after a heart-wrenching opening-round loss to Yamaguchi Falcao Florentino of Brazil, in the men's light heavyweight category on Monday.
Indian athletes will be in action in various disciplines at the 2012 Olympics on Monday. Check out their time schedule.
Manish defeated Denmark's Nikolai Terteryan in a split decision.
The Asian Olympic boxing qualifiers in Astana, Kazakhstan, did wonders to Vikas Krishan. He did not participate in it, but with three other Indian pugilists -- Shiva Thapa, Sumit Sangwan and Vijender Singh -- booking berths to the London Olympics from the tournament, he got off the media radar.
Teen boxers Shiva Thapa and Sumit Sangwan struck gold on Thursday, rounding off a brilliant performance by India at the Asian Olympic Qualifiers in Astana, Kazakhstan. The country bagged three berths to the London Games from the tournament to make it an unprecedented seven-strong contingent for the quadrennial extravaganza.
The two not only clinched Olympic berths but also gold medals at the Asian qualifying tournament in Astana, Kazakhstan.
India will have an unprecedented seven boxers in the Olympic Games after teen sensations Shiva Thapa (56kg) and Sumit Sangwan (81kg) earned their London tickets by advancing to the finals in the Asian Olympic Qualifiers in Astana, Kazakhstan.
It was a perfect start to the proceedings for India at the Asian Olympic Boxing Qualifiers with the experienced M Suranjoy Singh (52kg) and young gun Sumit Sangwan (81kg) notching up contrasting wins in their opening bouts in Astana, Kazakhstan on Thursday.
A cash bonanza awaits Indian boxers if they notch up medals at the London Olympics.
Competing for the first time in what has been mostly an all-European event, a four-member Indian boxing team gave a good account of itself, clinching two silver and a bronze medal at the 32nd International Tammer Invitational Tournament in Tampere, Finland.
Summary of sports events and persons who made news on Monday.
Vikas Krishnan (60kg) and Naveen Kumar (81kg) fetched gold medals, while three others settled for silver as the Indian boxing team finished runners-up at the Asian Youth Boxing Championships in Tehran, Iran.
On a mixed day for Indian boxers, five of the nine in action advanced to the finals of the Asian Youth Championships in Tehran, Iran.
It was a stunning loss for Panghal, who had won a gold medal in the Cologne World Cup a couple of months back. The 23-year-old ended up paying for his rather weak defence in the bout against Escobar.
Batra said athletes and officials travelling abroad for training and competitions should be careful and restrict their movements. India's own COVID-19 daily case count surpassed the 3 lakh mark on Thursday with more than 2,000 deaths.
Commonwealth Games silver-medallist L Devendro Singh (49kg) stormed into the semi-finals, while Manoj Kumar (64kg) and Sumit Sangwan (81kg) entered the quarters to be just one win away from clinching Olympic berths at the International Boxing Association's (AIBA) World Qualifying Tournament in Baku on Tuesday.
India had delivered its best ever Asian Championship performance in the 2019 edition in Thailand, claiming 13 medals, including two gold, four silver and seven bronze.
Vikas Krishan (75kg) became the third Indian boxer to enter the quarter-finals of the World Olympic Qualifying Tournament in Baku and be just one win away from booking a berth in the Rio Games this August.
Olympian Sumit Sangwan (81kg) and Vikash Malik (60kg) fought through intense bouts to enter the pre-quarterfinals but Mandeep Jangra (69kg) bowed out after a stiff second-round contest on a mixed day for India in the World Boxing Championships in Almaty on Sunday.
Third seed Satish Kumar (+91kg) and sixth seed Manoj Kumar (69kg) were among the three Indian boxers who qualified for the World Championships after winning their respective box-offs at the Asian Championships in Tashkent, on Sunday.
Shiva Thapa and Vikas Krishan will be among India's best bets to better both the colour and number of medals at the 19th World Boxing Championships, starting in Hamburg on Friday.
A summary of sports events and persons who made news on Friday
Shiva, a World Championships bronze-medallist and a two-time medallist at the Asian meet, edged past Kyrgyzstan's Omurbek Malabekov in a split verdict to make the last-eight stage, where he will face Chinese Taipei's Chu-En Lai in the quarterfinals on Wednesday.
Asian Games bronze-medallist Satish Kumar (+91kg) and Sumit Sangwan (81kg) notched up facile wins to enter the second round of the International Boxing Association's World Olympic Qualification tournament in Baku.
Commonwealth Games silver-medallist L Devendro Singh (49kg) and Asian Games bronze-medallist Vikas Krishan (75kg) will spearhead a nine-strong Indian team at the AIBA World Olympic Qualifying Tournament, starting June 16, in Baku, Azerbaijan.
Vikash Malik (60kg), Sumit Sangwan (81kg) and Satish Kumar (+91kg) joined Shiva Thapa (56kg) and Manoj Kumar (64kg) in the quarter-finals, on Tuesday, making it one better than the previous best India achieved in the 2011 edition in Azerbaijan.
With an eye to enhance India's medal hopes in this year's Rio Olympics, the Sports Ministry has sanctioned financial assistance to boxers Vikas Krishan and Sumit Sangwan, female discuss thrower Seema Antil Punia and shooter Chain Singh.