In January 1962 he was selected for a Combined XI of mostly young cricketers to play against the touring MCC in Bahawalpur.
In a low-scoring match ruined by rain he made the second-top score of 20 in the Combined XI's total of 162.
In the first match his 4 for 36 played a part in victory over Pakistan Education Board, while in the second he scored his first century, 102, batting at number three in the second innings in a loss to Karachi.
He toured England with the Pakistan Eaglets, a team of promising young players, in 1963, heading the first-class averages with 280 runs at 56.00, including 187 in an innings victory over Cambridge University, his highest first-class score, made in six hours.
[10] When a Commonwealth XI of international cricketers toured Pakistan in 1963–64 Aizazuddin played in the first match for a BCCP XI, making 0 and 47, then played in all three unofficial Test matches, making 72, 16, 21 and 62 not out, opening the batting against a pace attack of Charlie Griffith and Chester Watson.