Don Bradman’s career Test batting average was 99.9412. He played 52 test matches, with 80 innings, from 1928 to 1948, and scored 29 centuries.
His average was almost 39 runs higher than the next best batsman who had batted more than 20 times.
If he had scored 4 more runs in his final innings, he would have averaged 100 per innings. He is widely regarded as one of the greatest batsmen of all time.