Mo Farah has pulled out of tonight's 1500m final at the UK Athletics Trials. The world champion has decided it would be better to concentrate on the 5000m event at the European Championships in Helsinki next week.
Several London athletes have clinched their places at the 2012 Olympics after performing well at the trials in Birmingham.
Sprinter Dwain Chambers is on the verge of going to the Olympics after winning the British 100m title yesterday.
Saturday evening is a crucial one for London athletes hoping to book their place at the Olympics.