Yu Yang, one of the Chinese badminton players disqualified from the Olympics, says she is quitting the sport.
Yang and her partner Xiaoli Wang were disqualified by the Badminton World Federation on Wednesday for "not using one's best efforts to win a match".
Chinese Olympic officials demanded that the players "reflected deeply on it" and "publicly apologise".
Chinese players failed to demonstrate the fine tradition and fighting spirit of the national team. It's me to blame
Chinese Olympic delegation
Yang said on her Twitter-like Weibo account: "This is my last time competing. Goodbye beloved badminton."
Two pairs from South Korea and one from Indonesia were also disqualified for making errors in Tuesday's matches.
The introduction of a round-robin stage in the games meant that losing one game could lead to an easier match in the next round.
All four pairs were accused of losing in an attempt to manipulate the draw for the knockout stage with Yang and Wang facing compatriots Tian Quing and Zhao Yunlei had they won. But with Yang, who won a gold medal in the 2008 Beijing Olympics, and Wang losing, the two Chinese pairings could have only met in the final.
Wang also posted comments on her Weibo, saying that the players were being made to pay the price for problems with the new competition rules.
''What you've cancelled is not just a game, but my dream!'' she said.
China's badminton coach Li Yongbo said he should take the blame for the incident, which Chinese state media said "violates the Olympic spirit of fair competition".
"As head coach, I owe the supporters of Chinese badminton and the Chinese TV audiences an apology," the Xinhua news agency quoted him as saying.
The Chinese Olympic delegation added: "Chinese players failed to demonstrate the fine tradition and fighting spirit of the national team. It's me to blame."
Their places in the last eight were taken by the pairs who finished third and fourth in the qualifying groups concerned.