Chinese third leg runner gets hit on head in 4x100m final
Su rubbed his head after he handed the baton to anchor runner Zhang Peimeng who raced across the finish line in fourth while Britain clocked 37.47 seconds to win in a European record time.
The Chinese team have decided not to appeal.
"When I started off, the (British) second leg suddenly gave me a hit because he was cheering for his teammate. At that time, I was just speeding up and it surely would affect my speed," said Su. "I was taken back a little then."
Britain eventually edged the United States for the victory and Japan took bronze.
Aside from the incident, Su said everyone on the team delivered their best performance.
"I think everyone has done a good job. Actually, making regular appearances at top level international competitions already proves our strength," said Su.
"The only thing I feel regretful is that we can't have a better result because this was the last time this team competed together at an international competition."
Longtime anchor runner Zhang will end his career after the world championships and a medal could have been a great gift for his farewell race.
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