Australia captain Ricky Ponting feels the achievements of cricket legend Donald Bradman may never be overtaken.

Bradman dominated the game in the 1920s, 30s and 40s, scoring 6,996 runs from 52 Tests for Australia, giving him an average of 99.94. In his last match before retiring, against England at the Oval, he needed just four runs to have an average of 100 but was out for a duck.

Bradman died in 2001 aged 92, and the cricket world gathered to pay its respects to the batting great on Wednesday to mark the centenary of his birth.

Ponting told The Australian: "He dominated cricket for 20 years from his debut in 1928 to his retirement 60 years ago this month and if he had not lost eight years of his career to World War II his figures would no doubt be better still.

"At every Olympics plenty of records are broken. Bradman remains unassailable. Of the 2,519 batsmen who have taken the crease in 131 years of Test cricket, Bradman stands alone and untouched.

"There are thousands of kids in every generation who grow up in Australia wanting to scale the heights of the greatest cricketer who ever lived."

Ponting, whose average in Test matches is 58.37, laughed off comparisons with Bradman, calling it "amusing".

"There's no need to even look at the record books to know there is no comparison," he added.