Britain's top two mixed doubles pairs remained locked in a tight battle for an Olympic place after victories at the Yonex All England Open Championships on Thursday night.
And veteran Nathan Robertson and Jenny Wallwork could even clash with the Anglo-Scottish duo of Chris Adcock and Imogen Bankier in the semi-finals in Birmingham after both reached the last eight.
Robertson and Wallwork produced a superb performance in the evening as they saw off fifth seeds Chen Hung Ling and Cheng Wen Hsing 21-13 21-13 in just 33 minutes. That was an emphatic reply to the earlier display of Adcock and Bankier, who beat Koreans Yoo Yeon-seong and Jang Ye-na less convincingly, 15-21 21-19 21-19.
It is likely the pair ranked the highest in the world rankings to be published on May 3 will be selected to represent Great Britain at London 2012.
The race could hardly be closer with World Championship runners-up Adcock and Bankier 17th in the latest rankings published on Thursday with 2004 Athens silver medallist Robertson and Wallwork 19th.
Adcock also retains hope of qualifying for the Olympics in the men's doubles but his challenge in that discipline in Birmingham alongside Andy Ellis came to a halt.
Adcock and Ellis were unable to replicate an impressive first-round performance as they were beaten 21-13 21-15 in 42 minutes by Korea's fifth seeds Jung Jae-sung and Lee Yong-dae.
Britain's top men's singles player Rajiv Ouseph also saw his campaign come to an end as he failed to follow up his superb defeat of fourth seed Peter Gade.
The world number 26 from Hounslow felt his tough clash with the veteran Dane took its toll as he was beaten 21-15 21-10 by Malaysia's Daren Liew.
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