'Unbelievable' performance questioned

Published on Jul 31, 2012 by FinancialTimesVideos

Ben Fenton, Olympics reporter, talks to the FT's Seb Morton-Clark about the questions raised after the astounding performance of Chinese swimmer Ye Shiwen in the women's 400m individual medley.

For more in depth FT coverage of the 2012 Olympic Games in London go to: http://www.ft.com/intl/london-2012-olympics