Portia Bing disqualified from hurdle race

New Zealand hurdler Portia Bing has gone from the highs of setting a national record to the lows of disqualification all in the space of 15 minutes at the World Athletics Championships in Doha. Bing ran a personal best in finishing fourth in her heat of the 400 metre hurdles, qualifying her for tomorrow's semi-finals. However not long afterwards she was told she'd been disqualified for not clearing a hurdle correctly. Bing tells sports reporter Barry Guy she is appealing the decision.