GB's John misses out on finalpublished at 18:43 BST 11 September
Women's 400m semi-finals
So close!
Yemi Mary John is pushing and pushing down the home straight but just runs out of track as she closes in on the top four.
The 23-year-old clocks 50.38 seconds for fifth, as Dominican Olympic champion Marileidy Paulino takes the win in 49.58 ahead of Olympic silver medallist Salwa Eid Naser.
Tough heat for John, and that won't be enough to see her progress.












