Joy Kuan of the hosts came second in 1min 0.97sec. Third place went to Oh Shi Ning Charl of Singapore’s Nanyang Polytechnic crew who ran 1:01.99.
It was Huyen’s second gold at the tournament, in its 79th edition at the Singapore Sports Hub.
On April 27, she won and set a tournament record in the 400m hurdle event.
Huyen is the top Vietnamese runner in these two categories. She competed at the Rio de Janeiro Olympic Games last August.
Her teammate also tasted victory.
She won the women’s triple jump event with a result of 13.27m.
She jumped much longer than second-placed athlete Wendy Enn of Singapore, who set a national record with 12.05m.
This was Men’s first appearance at the Singapore Open. Men also won gold at the Asian Beach Games last September in Da Nang, jumping 13.11m. She is also the national defending champion.
Vietnam ended the two-day tournament with five gold medals.
VNA