Sumit Sangwan, Sarjubala Devi assured of medals, Shiva Thapa in India Open boxing quarters

Top seed Sarjubala assured India of their first medal of the day when she got past Kenya's Christine Ongare 5-0. (Twitter)

New Delhi: Asian silver-medallist Sumit Sangwan (91kg) and world silver-medallist Sarjubala Devi (51kg) were among the four Indian boxers who assured themselves of medals after facile wins in the inaugural India Open tournament for men and women here on Monday.

Second seed Sumit defeated compatriot Virender Kumar 5-0, while Sarjubala Devi (51kg) and Pinki Jangra (51kg) advanced to the semis in the women's competition of the USD 100,000 event.

The heavyweight (91kg) top seed, Naman Tanwar, who claimed a bronze at the world youth championships, made an impressive debut in the senior circuit, defeating Jordan's Eishaish Hussein to enter the semifinals and be assured of a medal.

Entering the quarterfinals with an easy win was top seed and three-time Asian medallist Shiva Thapa (60kg), who produced a calculative performance to defeat Bhutan's Dorji Wangdi in his opening clash. Shiva will face Uzbekistan's Sherbek Rakhmatulloev.

Another impressive win of the day was notched up by reigning national champion Manish Kaushik (60kg), who came up with a spirited show to defeat Cuba's Rabi Armando Martinez.

Top seed Sarjubala assured India of their first medal of the day when she got past Kenya's Christine Ongare 5-0.

The diminutive Manipuri, who is a world championships silver-medallist, was in aggressive mode from the first ring of the bell.

Her hooks connected quite accurately, and she did well to back-peddle and thwart Ongare's attempts at counter-attack. In the end, judges had no hesitation in awarding the bout unanimously to the home favourite.

She set up a semifinal clash with Mongolian Jargalan Ochirbat, who upstaged 13th seed and former junior world champion Nikhat Zareen in a fiercely-contested clash. Ochirbat won the bout on a split 3-2 verdict.

Also advancing to the medal rounds was Commonwealth Games bronze-medallist Pinki Jangra (51kg). She scored a comprehensive 5-0 triumph over Jordan's Al-Mriheel.

Among the men, world championships quarterfinalist and Asian bronze-medallist Amit Phangal entered the last-eight stage without having to fight after his rival Ramish Rahmani of Afghanistan gave him a walkover.

Next up for Amit is Cameroon's Fotsala Simplice, who got the better of Malaysian Mohammad Fuad Bin Redzuan.

King's Cup gold-medallist K Shyam Kumar (49kg) also advanced to the quarters but after a draining contest against compatriot Neeraj Swami even though the scoreline read 5-0 in favour of the former.

However, it was heartbreak for world youth champion Sachin Siwach (49kg), who lost a closely-contested bout against Thailand's Thani Narinram.

Earlier, Pooja (69kg) had been assured of a medal after making the semifinal straightaway owing to the small size of her draw.