The tournament's 15th seeds rallied past Mexico's Juan Virgen and Lombardo Ontiveros in a three-set thriller at Haibin Square.

Virgen and Ontiveros, seeded fourth in China, claimed the opening set 21-19.

Sivolap and Velichko managed to take the second 21-19 and force the tie-breaker.

In the third set, the Mexicans managed to defend six match points to level it at 18-18, but Velichko converted on the seventh with a smash to win it 20-18.

"We are really happy," said Sivolap.

"We played on almost our maximum level and won the tournament and we can't express our feelings now.

"The gold medal shows that we are going in the right direction and we have been working strongly.

"Our aim was to go for the gold medal and we got it and everybody is really happy."

Earlier today, third seeds Nadir Diaz Gomez Nivaldo and Bayard Sergio Reynaldo Gonzalez of Cuba overcame top seeds Dries Koekelkoren and Tom van Walle of Belgium 16-21, 21-16, 15-11 to win bronze, the first medal for them at any World Tour event.

In the women's gold medal match, Australian fifth seeds Mariafe Artacho and Taliqua Clancy finally brought the remarkable run of Polish underdogs Kinga Kolosinska and Katarzyna Kociolek to a close.

Artacho and Clancy swept aside their European opponents 21-11, 21-12 in just 28 minutes to take gold.

"The key is teamwork and trust in each other," said Artacho.

"We stayed really strong together, at every point, whether we were up or down."

During their stunning campaign, Kolosinska and Kociolek upset third seeds Claes Kelly and April Ross of the United States as well as American second seeds Brooke Sweat and Summer Ross on their way to the final.

Sweat and Ross beat top seeds Wang Fan and Xia Xinyi of China 21-18, 21-13 to take home the bronze medal.