"After I defend my 200 metre title also, I'll consider myself a legend."
Jamaica's track and field manager said he had no doubt Bolt would do the double in London.
"I don't think anybody would come near him," said Ludlow Watts.
He lavished praise upon his three 100m finalists, including Asafa Powell whose challenge ended in disappointment after an old groin injury reoccurred around the 70m mark.
"All three are achievers," said Watts.
"Powell actually started this great change in our sprinting, and he's still a champion. He was world champion and the world record holder for many years, so we are proud of his achievements.
"Blake is the youngest of the three. Last year he won [the world 100m title] in Daegu, and that has altered his demeanour. It has motivated him, and he will continue to do well in the future.
Watts said "for the next few years," Bolt's legacy would remain unchallenged.
"I don't think his achievement can be matched by anyone near our generation."
The men's 200m heats begin on Tuesday night at 10:50pm NZT.