Bishop tracked the pacemaker through 400m in a quick 58.08 .
A slower third lap outside 31 seconds probably cost her a sub-2 : 00 clocking , and the world - leading mark which stands to Joanna Jozwik at 2 : 00.12 .
Bishop tracked the pacemaker through 400m in a quick 58.08 but a slower third lap outside 31 seconds probably cost her a sub-2 : 00 clocking , and the world - leading mark which stands to Joanna Jozwik at 2 : 00.12 .