VINH PHUC — Teener Rianne Malixi delivered in style, coming through with a spectacular chip-in birdie on the fourth playoff hole to beat Singapore’s Suanne Loh on Wednesday and power the Philippines to the bronze medal in women’s golf team match play at the Heron Lake Golf course.

Ms. Malixi’s heroics came after she muffed a five-foot downhill birdie putt on No. 1, the third playoff hole, giving Loh, whose own chip hit the cup but lipped out, and Team Singapore another crack at the hotly-disputed medal.

Both players overshot the par-5 No. 9, where they matched par twice in the playoff, but the ICTSI-backed Ms. Malixi, 15, hit a perfect chip shot, the ball landing before the green then rolling from left to right before dropping to the cup.

Undaunted, Ms. Loh also hit a solid chip-shot, the ball heading straight to the hole only to swerve to the left, sending Malixi and Team Philippines into frenzy and reducing the Singaporean lass to tears.

That chip saved the week for the Filipino golfers, who could finish no higher than fourth in women’s individual play courtesy of Lois Kaye Go, with Ms. Malixi ending up joint ninth behind eighth placer and ICTSI teammate Mafy Singson and 15th in the men’s side through Jed Dy.

The men’s squad, which included Jet Hernandez, Gab Manotoc and Kristoffer Arevalo, also absorbed a 0-3 beating from Indonesia in the men’s team quarterfinal match play.

Earlier, Ms. Malixi upstaged individual silver medalist Aloysa Mabutas 3 and 2 to force a playoff for the bronze after Ms. Go lost 4 and 3 to Loh.

Ms. Malixi took the first two holes against Ms. Mabutas, surrendered the next but held sway all throughout their tight duel, going 2-up again by taking No. 15.

A solid tee-shot on the par-3 16th set up another birdie chance from six feet and the rising Filipina star delivered, draining in a downhill putt to clinch the victory.

She pumped her fist then gave Ms. Mabutas, whose parents are Filipino migrants, the customary hug before celebrating with her team.

It was a big windup for Malixi, who groped for form in individual play and in the first round of team match play, dropping a 2 and 1 setback to Thai gold medalist Natthakritta Vongtaveelap in their semis duel but came into the bronze medal match brimming with confidence, winning the first two holes against Mabutas.

In contrast, Ms. Go struggled against Ms. Loh. The member of the bronze medal team in the 2019 SEA Games in Tarlac never recovered after trailing on No. 3, giving up another hole on the sixth. She took No. 8 but yielded the 10th and gave up three straight holes from No. 13.

Malaysia staked its claim as the new force in men’s amateur golf in the region, breaking the vaunted Thailand side with a 2 and 1 victory on Rhaasrikanesh Kanavathi’s equally stirring chip-in for birdie on the 18th for a 1-up triumph over Pongsapak Laopakdee and a 2-1 victory for the team gold.

Ervin Chang held off Weerawish Narkprachar 2 and 1, while fancied Ratchanon Chantananuwat earlier nipped Marcus Lim, 1-up, to split the first two matches with Kanavathi’s last-hole brilliance likewise preserving Chang’s gold medal sweep.

Indonesia beat Singapore 2 and 1 to claim the men’s bronze team medal.

The Thai women’s squad, however, swept the gold medals with Ms. Vongtaveelap running away with the individual honors and then teaming up with Eila Galitsky in their 1.5-0.5 victory over Malaysia in the gold medal match.

Ms. Galitsky provided the clincher with a 1-up victory over individual bronze medalist Jeneath Wong with Ms. Vongtaveelap settling for an all-square match with Mirabel Ting.