Usain Bolt v Justin Gatlin at the World Athletics Championships
Watch the key races in the rivalry between Usain Bolt and Justin Gatlin ahead of their clash in Thursday's 200m final at the World Athletics Championships in Beijing.
Jamaican Bolt, 28, is seeking to retain his 200m title after beating his American rival to gold in the 100m final on Sunday.
Prior to the 100m final, Gatlin, who has the quickest times of the year over 100m and 200m, was unbeaten since 2013 in a total of 27 races in both sprints.
Watch live coverage of the 200m final across BBC Sport at 13:55 BST on Thursday.