He needs a very big race today , as six athletes in the field have run faster than him .
Chris O'Hare runs for Great Britain in this , so we 'll keep an eye on how he gets on .
Chris O'Hare needs a very big race today , as six athletes in the field have run faster than Chris O'Hare .
Chris O'Hare runs for Great Britain in this , so we 'll keep an eye on how he gets on .