British sprinter Dwain Chambers and Jamaican world record holder Usain Bolt are lining up on their starting blocks.
The two are sprinting head-to-head over 100 metres at the Golden Spike event in Ostrava, Czech Republic.
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The Westminster terror attack dominates the front pages of Thursday's newspapers.
A timeline of exactly what happened.
Tobias Ellwood, MP for Bournemouth East and Foreign Office Minister, attempted to save the life of the stabbed officer in Westminster.