Nguyen Hoang Thien defeated Aditya Hari Sasongko on Sunday to secure Vietnam’s 3-2 victory over Indonesia at a 2016 Davis Cup Asia/Oceania Zone Group II match in Surakarta on Sunday.

Thien’s win was a bit of an upset as most people had predicted a loss for Vietnam, especially after Ly Hoang Nam quit another single match earlier on the same day due to muscle cramps.

In the first set, Thien showed signs of fatigue after losing 6/3.

But he came back strong in the second set to win 6/2.

In the third set, Thien was led 2-0 before he had to lie down due to a muscle cramp that required medical assistance. He lost 6/3.

However, he once again made a surprise comeback and defeated Sasongko in the last two sets, both 6/4.

The Vietnam Tennis Federation has awarded the team US$10,000.

In the next round, Thailand will host Vietnam and Chinese Taipei will play the Philippines from July 15-17.