Sprint legend Usain Bolt says he wants to break the 19-second barrier in the 200m, which he insists is his "favourite event", next season.
Bolt, who holds the world record of 19.19 seconds and is a two-time Olympic champion at the distance, says his only aim at London 2012 was to "defend his titles" and not to break his own records.
The Jamaican adds he could "definitely" have broken the 200m mark but says he "felt his back" as he came round the bend and did not want to risk an injury.
Bolt also jokes about asking Sir Alex Ferguson for a trial at Manchester United.
Watch the Diamond League meeting in Zurich live on BBC Two and on the BBC Sport website from 1900 BST on Thursday.