Indonesia's Simon Santoso eliminated compatriot and former Olympic champion Taufik Hidayat from the China Open on Thursday in straight games 21-15, 21-10.
"It's nothing, that's the game," said an exhausted Hidayat, the eighth seed, who has already qualified for next year's London Olympics for what is likely to be his final appearance at the Games.
Hidayat had fought a gruelling first-round match against a 121st-ranked local player to advance to the next round, where he was sent packing by his unseeded team-mate in 40 minutes.
The China Open in Shanghai is the last of 12 Superseries tournaments.
Players are competing for $350,000 in prize money and points which will count towards a ranking that will enable them to compete next month at a finals competition in Liuzhou, China, December 14-18.