Ennis-Hill unsure of heptathlon return

Jessica Ennis-Hill says she is unsure about returning to action for next month's World Championships, despite admitting her ankle is "on the mend".

The 2012 Olympic heptathlon champion was competing at the Loughborough European Athletics Permit, where she set a new personal best in the javelin and won the long jump.

Ennis-hill says her ankle is "definitely a lot better", but she is unsure whether it can sustain a competitive heptathlon.

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