1963–64. He was Australia's leading bowler with 16 wickets at 43.06. In the Third Test in Sydney, he hit his highest Test score of 76. Five-wicket hauls In cricket, a five-wicket haul (also known as a "five–for" or "fifer") refers to a bowler taking five or more wickets in a single innings. This is regarded as a notable achievement, and as of August 2014 only 23 bowlers have taken at least 20 five-wicket hauls at international level in their cricketing careers. 1964 saw McKenzie make his second Ashes tour of England. He led the attack as Australia retained the Ashes. His 29 wickets in five Tests equalled the highest obtained for Australia in England by Clarrie Grimmett in 1930. He took 21 wickets when Australia visited India and Pakistan on the return journey to Australia. Another seven wickets in a one-off Test against Pakistan in Melbourne in December established a new record for the number of Test wickets in the space of one year; from 11 December 1963 to 8 December 1964 he took 73 wickets in fifteen Tests. This surpassed Maurice Tate's 65 wickets in 1924–25. In this period, he became the youngest bowler to reach 100 wickets, at the age of 23 and 162 days, 139 days younger than A.L. Valentine. He was named as one of the Wisden Cricketers of the Year in 1965, the first Western Australian born recipient. He toured South Africa in 1966–67 and in 1967–68 was dropped for the final two Tests after taking his only ten wicket match haul against India. In 1968, McKenzie became a full-time cricketer, believing that it would offer him the best chance of financial security. At the time the Australian Cricket Board regarded its players as amateurs and paid them accordingly. McKenzie joined Leicestershire, captained until 1968 by the Western Australian skipper and former England Test stalwart Tony Lock. He took over four hundred wickets for the county and was instrumental in its four One Day Cricket trophies in the early 1970s and winning their first County Championship in 1975. In 1968-69 he took 30 wickets (25.26) against the visiting West Indies and at 27 became the youngest man to take 200 Test wickets, a record since beaten. Another 21 wickets (21.00) came on the Indian tour of 1968–69, but when the Australian team proceeded to South Africa his form slumped (1/333 in four Tests) and they