The Filipino fighter proved to be far too strong for Sri Lanka's Krismi Lankapurayalage in Jordan's capital, as she controlled the contest and won here by unanimous decision.

With all four semi-finalists in the women's featherweight qualifying for Tokyo 2020, Petecio is just one victory away.

The top seed said she expected more from herself, however.

"I am not satisfied because I felt heavy out there," she said.

"Maybe it is because it is my first fight but I felt I wasn't at my best so I will improve for my next fight."

Other winners today at Prince Hamzah Hall included Indonesia's Aldoms Suguro who got the better of Pakistan's Muhammad Asif in the men's flyweight.

That has set-up a second-round clash with Uzbekistan's reigning Olympic gold medallist and world champion Shakhobidin Zoirov.

Thailand enjoyed a strong day with a hat-trick of victories, including Sudaporn Seesondee's upset win over China's world silver medallist Wenlu Yang in the women's lightweight.

Thitisan Panmot dominated Bhutan's Tashi Wangdi in the men's flyweight and Wuttichai Masuk ousted South Korea's Hyunchul Lim in the men's welterweight.

Chinese Taipei's pair of winners included 2018 women's bantamweight world champion Yu-Ting Ling, who saw off Uzbekistan's Yodgoroy Murzaeva in the featherweight.

In the men's welterweight Hung-Ming Pan defeated Dinesh Pathirage of Sri Lanka.

Australia enjoyed wins for Jason Mallia over Iraq's Karrar Al-Ezairej in the men's welterweight and Skye Nicolson against Tajikistan's Mijgona Samadova in the women's featherweight.

India's Sakshi won in the women's featherweight against Thailand's Nilawan Techasuep and Simranjit Baatth added a second win for the country by out-boxing Rimma Volossenko of Kazakhstan in the women's lightweight.

South Korea were another country to record a pair of wins, with Aeji Im getting the better of Nepal's Minu Gurung in the women's featherweight.

Yeonji Oh was also successful after coming through against Shoira Zulkaynarova of Tajikistan in the women's lightweight.

Mongolia's successes included a stoppage for Enkhmandakh Kharkhuu in the men's flyweight against Tajikistan's Shuhrat Sabzaliev.

In the last fight of the day, fellow Mongolian Misheelt Battumur got the better of Qatar's Thulasimmaran Tharumalingam at men's welterweight.

Preliminary round clashes will continue tomorrow.

The event was initially due to take place in Chinese city Wuhan, but was relocated due to coronavirus.

Thirty-five countries and 221 boxers are competing at the event, with 41 men's and 22 women's berths up for grabs at Tokyo 2020.