Sue Barker presents live coverage of the penultimate night of competition in Helsinki, featuring four finals, the highlight of which is the men's 4x100m.
5.45 Men's long jump final. There could be British interest here if Olympic finalist Chris Tomlinson manages to overcome an injury-plagued summer.
6.10 Women's 5,000m final. Britain's Jo Pavey should be lining up tonight, but she'll face a daunting African-dominated field likely to be led by Ethiopia's world and Olympic champions Meseret Defar and Tirunesh Dibaba.
6.40 Women's 4x100m final. Olympic champions
Jamaica will be strong favourites, with title-holders France and a new-look USA team their main opposition.
7.05 Women's 4x400m round 1
7.40 Men's 4x100m final. Great Britain's men caused one of the greatest upsets in athletics history when they beat the powerful American quartet to Olympic gold last summer. Most, if not all, of that British team should be in action tonight, chasing the nation's first ever world sprint relay gold. Can they once again dig out a team performance to exceed that of the USA's squad of undoubtedly faster individuals? BBC Radio 5 Live has coverage from 12 noon in Sport on 5 INTERACTIVE: digital viewers can access news and a medals table