Le Tu Chinh won the first gold medal in the women’s 100m event with a time of 11.47sec, setting up her personal best.
Her time was much better than that of Kayla Richardson of the Philippines (11.76sec) who won a gold medal at last Southeast Asian Games two years ago in Singapore.
Chinh will continue with the 200m and 4x100m relay events in the next days.
Chinh won a national title and a gold medal at the Asian Youth Athletics Championships two months ago.
Later, Duong Van Thai championed in the men’s 1,500m event with a time of 3min 55.66sec. His teammate Do Quoc Luat was at third with 3:57.73.
Vũ Thị Ly triumphed in the women’s 1,500m, timing 4:40.93.
Vietnamese athletes dominated the men’s and women’s 10,000m categories with two golds and two bronzes.
Pham Thi Hue took the fourth gold for Việt Nam in the women’s class with a time of 35:30.27. Phạm Thị Hồng Lê added a bronze on 37:23.98.
SEA Games defending champion Nguyen Van Lai claimed the title, taking 31:25.05. Lê Văn Thao was third with 32:03.17.
The only silver went to Nguyen Thi Truc Mai in the women’s long jump event. Meanwhile, Nguyễn Tuấn Anh was third in the men’s long jump.
Bui Thi Xuan secured a bronze in the women’s javelin event with a throw of 49.53m.
The Open tournament kicked off yesterday and will last until Thursday. Nearly all ASEAN countries send their athletes here as it is a warm-up for the SEA Games in August in Malaysia.