The 1960-61 season began with McKenzie's third first-class match, against the West Indies. He did not bowl in the first innings but took 4/41 in the second to seal a 94 run win, prompting West Indies captain Frank Worrell to predict a bright future. Further strong performances during the Shield season saw him selected at age 19 for the 1961 Ashes tour under Richie Benaud. Following an injury to Benaud, Australia replaced him with a third seamer, allowing McKenzie to make his debut in the Second Test at Lord's during the "Battle of the Ridge". In his first innings, he made 34 on his twentieth birthday batting at number 10 on a difficult pitch. The last two wickets added 102 and Australia gained a lead of 134. In England's second innings, McKenzie captured the prized wickets of Ted Dexter and Peter May, and took the last three wickets in twelve balls to give 5/37 on debut. Australia went on to win by five wickets. After losing the Third Test at Headingley, Australia won the fourth Test at Old Trafford with McKenzie again making a valuable contribution with the bat. With a lead of only 177 with nine wickets down in the second innings, McKenzie joined Alan Davidson. He held his end for 32 runs while Davidson's powerful hitting saw 98 added for Australia's highest tenth wicket partnership on English soil. This allowed Benaud to bowl Australia to victory on the final day. The youngest member of the touring party, McKenzie was one of eight bowlers to take at least fifty wickets. When Dexter's Englishmen toured Australia in 1962-63, McKenzie was promoted to share the new ball with Davidson. Playing in all five Tests, he did not trouble the batsmen to the same extent as his partner, taking 20 wickets for 30.95. He was noted for his ability to contain the opposition by bowling long spells. Davidson retired at the end of the series and McKenzie became the pace spearhead when South Africa toured in 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.

Answer this question "Are there any other interesting aspects about this article?" by extracting the answer from the text above.
In his first innings, he made 34 on his twentieth birthday batting at number 10 on a difficult pitch.