Usain Bolt brought world-class pizzazz to the athletics world championships as one Olympic champion ducked out without completing even a single pole vault and another was in tears after false starting in her 400 metres heat.
Bolt, the world's fastest man, left the rapidly emptying stadium all smiles after posturing his way through a simple 100 metres heat. His grin was matched by the joyful Kenyans who swept all six medals on offer on day one.
Britain's Christine Ohuruogu was left sobbing on a stairway in Daegu's cavernous arena as rivals tried to console her after she was disqualified.
World and Olympic champion pole vaulter Steve Hooker was equally disappointed. Having declared himself fit but undercooked after injuries had delayed his start to the season, Hooker failed three attempts to clear 5.50 metres.
Policewoman Edna Kiplagat was left with a skinned knee but the broadest of smiles when she survived a late fall to lead a Kenyan sweep in the women's marathon.
The only other medals event also resulted in a Kenyan clean sweep when Vivian Cheruiyot won gold in the women's 10,000 metres ahead of Sally Kipyego and Linet Masai.
Another Kenyan, Priscah Cherono, finished fourth, making it the first 1-2-3-4 sweep in a women's 10,000 metres at the world championships.
