Former World Boxing Association female atomweight champion Ayaka Miyao’s planned fight on Sept. 27 with Thi Thu Nhi Nguyen of Vietnam for the vacant World Boxing Organization minimumweight crown in Vietnam’s Ho Chi Minh City was postponed due to the effects of the novel coronavirus or COVID-19, according to the Sept. 15 website of the Watanabe Boxing Gym to which Miyao belongs.

While no other information is available at this point, both sides and the WBO will work out the new schedule for the 105-pound (47.6 kgs) title on all fronts, the website said.

The 37-year-old Miyao successfully defended the title of the world atomweight, boxing’s lightest division with the weight limit of 102 pounds (46.266 kgs) five times between September 2012 and October 2015. She has a win-loss-draw record of 23-8-2 with six knockouts.

For her part, the 23-year-old Nguyen is undefeated in her four bouts, including a knockout, and captured the WBO Asia Pacific minimumweight crown in February this year.