With both sides already qualified for the knock out stages, suspicions grew when the longest rally lasted only 4 shots.

Having watched the match with some six thousand spectators at the Wembley Arena, Chairman of the London Organizing Committee, Sebastian Coe expressed his disappointment.

"It's depressing. Who wants to sit through something like that. It's not acceptable."

The same tactics were seen in another match between an Indonesian pair and another South Korean pair. The deliberate bid to lose so obvious, that the game was jeered by the watching crowds.

The Badminton World Federation reacting to that by disqualifying all four pairs. Their secretary general Thomas Lund explaining the decision.

"The pairs were charged under BWF's Players' Code of Conduct with 'not using one's best efforts to win a match' and 'conducting oneself in a manner that's clearly abusive or detrimental to the sport."

However World No. 1 Lin Dan of China, who's in the final eight himself after knocking out Indonesia's Taufik Hidayat, says the players involved aren't the only ones to be blamed.

"What has happened may not have been in line with the Olympic spirit. But the rule makers surely should take liability in this regard. We are just participating in the Games. But the regulators should have thought this through and be more rigorous in making the rules."

Leader of the German badminton team, Martin Kranitz, agrees that it's not just the players at fault here.

"What the problem is that the regulations give the possibility to do such things. So the first thing is that the BWF has to change the system (so that) such things cannot happen. The second thing is that if it's possible, can you do this or not. We are now in a very big focus world wide. I think it gives us very negative image."

The round robin stage in question was only incorporated by the BWF instead of a straight knock-out tournament for these London Games especially. It was done with a view to give the sport more TV coverage and more opportunities for less-strong players.

BWF Secretary General Lund says the system will be re-evaluated for later.

"We would evaluate the system for the future. There is an issue we need to look into. But we have diligently made sure that the matches have been planned in a way where number one and two should meet last so there would not be any high motivation to plan matches and so on."

Currently the Chinese Olympic delegation is investigating the incident, with officials promising possible further action based on what they find.

But as things stand now, for the 8 players involved in the controversy, London 2012 has ended.

For CRI, I'm Tu Yun reporting from London.