Usain Bolt believes the crowd can dictate how fast he runs in his closing race of the season at the IAAF World Athletics Final in Thessalonika.
All the expectations are that Bolt will bring his momentous season to an end in style over his favourite 200metres distance.
Bolt originally intended to travel to the Far East for meetings in Shanghai and Daegu later this month, but he has decided after his hectic unbeaten summer schedule it is time to take a rest.
The Jamaican may be suffering from fatigue but he has not ruled out running another fast time, possibly even quicker than the 19.57 seconds which he achieved in Brussels last Friday.
That was the fourth fastest time in history.
The 23-year-old Olympic and world double sprint champion whose world record is 19.19 seconds, said: ‘I don't know how fast I'm going to go
‘I kind of surprised myself in Brussels really, because as I said there that I was tired.
‘But when I got out there the crowd gave me that extra energy I needed because they really
welcomed me very warmly. They actually gave me the energy that I needed to do what I did.
‘So if the crowd is really energetic here, I think I should do well.’
Bolt revealed it was his coach Glen Mills who decided it was time to call a halt after this Sunday's race, following an intensive programme which was highlighted when he lowered his 100m and 200m world records at last month's World Championships.
Bolt never disputes the advice given to him by Mills, and explained: ‘I was getting tired and he said that you should go to the final and if you don't think you can go on, you can just end the season there.’
Bolt is one 81 medallists from the World Championships competing and the event includes three of the four British individual medallists - Phillips Idowu, Lisa Dobriskey and Jenny Meadows - with heptathlon winner Jessica Ennis an absentee.
Idowu, the triple jump champion in Berlin, will be in action tomorrow, as will 1,500m silver medallist Dobriskey, while 800m bronze medallist Meadows competes on Sunday.