20 May 2012 Last updated at 17:14

Hurdles error mars Jessica Ennis victory in Manchester

Britain's Jessica Ennis wins the 100m hurdles at the Manchester City Games but a missing hurdle prevents her personal best time of 12.75secs standing.

The heptathlete beat Olympic champion Dawn Harper into second with American Danielle Carruthers in third but the event organisers had set up the course with only nine hurdles not the regulation 10.