Jamaica's Shericka Jackson will not be able to add to her bronze from the 100 metres after a terrible error in the heats of the 200 on Monday, where she eased up too much and was overhauled on the line to finish fourth.

TOKYO: Jamaica's Shericka Jackson will not be able to add to her bronze from the 100 metres after a terrible error in the heats of the 200 on Monday, where she eased up too much and was overhauled on the line to finish fourth.