Who is the only batsman to score three centuries in first matches of his career?

Indian Batsman Mohammed Azharuddin is the only batsman to have scored three centuries in his first three test matches. Azharuddin started his Test career in 1984 against England at Kolkata. In the first innings of his first test match he scored 110 runs, again in second and third test matches he scored 105 and 122 against England.