1. Sir Donald Bradman
Cricket Legend Sir Donald Bradman is having the highest average in test cricket. In a career span of 20 years, Bradman played 52 test matches and scored 6996 runs. His average in the format was 99.94 and best career performance was 334 against England in 1930. Nick named "The Don", Bradman scored 13 half centuries and 29 centuries in his career. He is considered as one of the greatest cricket legends of all time.
2. Adam Voges
After his ODI debut in the year 2008, Adam Voges had to wait for 7 more years to make his first test cricket appearance. Voges has been considered as one of the best test players in the list of making late debut. In his 1 year test career, Voges scored 1485 runs from 20 matches and had 5 hundreds in the stat. There was 4 half centuries and had an average of 61.87 in his test career. Unbeaten 269 against West Indies is his best test career performance.
3. Steven Smith
Former Australian captain, Steven Smith is having an average of 61.37 in test cricket, and is third highest in the list. From 64 test matches Smith scored 6619 runs with best being 239 against England. Till now Smith is having 23 hundreds and 24 half centuries. Smith was known for his excellent striking skills, but a bowl tampering controversy against South Africa in March forced him to stay out of test cricket for 1 year.
4. Graeme Pollock
One of the greatest South African test player, Graeme Pollock had an average of 60.97 in test cricket. Smith played 41 innings's out of 23 test matches. And he scored 2256 runs including 7 hundreds and 11 half centuries. 274 against England is the best performance in his career. It was also the highest runs by a South African batsmen and later it was broken by AB de Villiers. The left handed batsmen had a crucial role renovating the South African cricket team.
5. George Headley
Nicknamed Black Bradman, George Headley is one of the finest cricketers in the West Indies cricket team history. In his 24 year test career, Headley played 22 test matches and scored 4042 runs. His average in the format was 60.83. There was 10 century performances and 5 half century performances in his career. His unbeaten 270 against England is his career best performance. There was some scenario's in which Headley was compared with the great Bradman.
6. Herbert Sutcliffe
Herbert Sutcliffe, one of the greatest cricketer of England had an test career average of 60.73. In his 11 year test career(1924-1935), Sutcliffe played 45 matches and scored 4555 runs. His career best performance was 194. Sutcliffe scored 16 hundreds and 23 half centuries in his test career. The right handed top order batsmen was known for his amazing batting techniques.
7. Eddie Paynter
Another Englishman in the list Eddie Paynter. He was known for his amazing consistency and had an average above 80 against their rivals Australia. In his 8 years test career(1931-1939), Paynter scored 1540 runs. He had an average of 59.23 from 31 innings's. He blasted 4 hundreds and 7 fifties in his test career. 243 against South Africa is the best performance by him in the test cricket.
8. Ken Barrington
Ken Barrington, whom known for his brilliant defense batting in test cricket is placed 8th in the list with an average of 58.67. In a test career spanning 13 years(1955-68), Barrington played 82 matches and scored 6806 runs. There was 20 hundreds and 35 half centuries in his test career. 264 against Australia was his career best performance. In his career beginning Barrington was a attacking batsmen and later shifted his style to defense.
9. Sir Everton Weekes
Sir Everton Weekes had an impressive test career. The West Indies batsmen played 48 test matches in a 10 year career span. His average in the format was 58.61 and had 15 hundreds and 19 fifties. Weekes scored 4455 runs and best being 207 against India. The right hand batsmen known for his batting style and considered as the starter of West Indies player's aggressive batting. He was brilliant against India in their 1947-1948 tour scoring 5 back to back hundreds.
10. Wally Hammond
Former England batsmen Wally Hammond placed in the 10th position with an average of 58.45. In his 20 year cricket career(1927-1947), Hammond scored 7249 runs with best being an unbeaten 336 against New Zealand. From his 140 innings's, the right handed batsmen scored 22 hundreds and 24 fifties. He is considered as one of the greatest cricketers along with WG Grace, Jack Hobbs and Don Bradman.