It didn't matter whether the higher ranked pairs were Chinese, Indonesian, Danish or British, they all felt the heat of playing opponents they've never met until today or ones not under the pressure of preparing for the Rio Olympic Games.
Last year's runner-up and fourth seeded Bao Yixin / Liu Cheng came through in three games against experienced Malaysians Lai Pei Jing / Tan Kian Meng 21-9, 19-21, 21-11 but their European counterparts from the top 10, England's Gabrielle Adcock / Chris Adcock and Denmark's Christinna Pedersen / Joachim Fischer-Nielsen were both knocked out in straight games.
The younger Chinese pairs don't all play the same. The Danes were brought down by the patient rallying propensity of Tang Jinhua / Liu Yuchen 21-18, 21-16. "The Danish are known to hit powerfully so we knew our defences must be up to the task", spoke Liu about his side's priority.
On the other hand, the bouncy pair of Chen Qingchen / Zheng Siwei accounted for the Adcocks with both running down Chris's smashes and rushing towards the net to kill netshots rather than lightly skim them over. "We played just like we normally do", remarked Zheng Siwei.
Of the Indonesians, Debby Susanto / Praveen Jordan managed to the job in straight games against Singaporeans while Richi Puspita Dili / Riky Widianto needed advice from their coach, former World Champion Nova Widianto, on how to counter the free flowing fun strokes of Line Kjaersfeldt / Kim Astrup to claw back in the nick of time 14-21, 23-21, 21-14.