Vijender, who was the first Indian boxer to win a medal at the mega-event (a bronze in the 2009 edition), out-punched his rival 3-0 to make the last 32 to round off a third successive winning day for India.
The individual scoreline read 30-27 30-26 30-26 in favour of Vijender, who is aiming to make a strong comeback after being embroiled in a drug scandal, which denied him several weeks of training earlier this year.
"I have been on medication for the last two days. Before today's bout my coaches told me that I should not feel weak mentally no matter how I was feeling physically. So, I just went in with a positive mindset and pulled off the win," he said.
National coach Gurbax Singh Sandhu also praised the boxer's performance.
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"Vijender gave an exceptional performance against a very tough boxer. The other guy was very aggressive but Vijender caught him with some good uppercuts, that broke him. Later, Viju connected some deft left hooks," Sandhu said.
"Let's hope that I recover substantially by then and see how it goes," said Vijender.