Jessica Ennis last night admitted she was "gutted" to lose her second world title inside seven months, especially after briefly thinking she had pulled off a remarkable victory in Istanbul.

Ennis went into the final event of the pentathlon at the World Indoor Championships trailing Olympic heptathlon champion Nataliya Dobrynska by a massive 93 points.

The 26-year-old did all she could by taking almost 4½ seconds off her indoor personal best in winning the 800 metres – and then saw her name flash up in first place on the scoreboard.

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