Gleaned from the net:
His leg-spin did not develop: Cowdrey later theorised that he could not grip a larger, adult, ball so well with his small hands, and that he lacked the necessary "bottle". But his batting began to flower gloriously: it was said that Maurice Tate, the last of his coaches at Tonbridge, would forget to signal while umpiring because he was so engrossed in Colin's strokeplay. As a 16-year-old he made an unbeaten 181 against the Buccaneers and was picked for Kent Second Eleven; at 17, he averaged 79 at school and, in August 1950, was eased into the county first team. At 18, just before he was due to go to Oxford, he scored 90 against Hampshire and 71 against the South Africans, became the youngest Kent player to be capped, and was picked for the Gentlemen at Scarborough against a Players side captained by Len Hutton. Cowdrey hit 106. At Oxford, his batting was impressive rather than earth-shattering. But he scored a century in the 1953 University Match, which prompted E.W. Swanton, in the Daily Telegraph, to compare him to Walter Hammond, the same thought that had struck Hutton two years earlier. He went close to 2,000 runs for Oxford and Kent that year but fell back in 1954 - he was astonished (more embarrassed than elated, according to one account) when he was chosen for the tour of Australia. He was 21. His parents saw him off at Tilbury; three weeks later, his father, aged 54, died of heart disease.
(To be continued)