During the 1950s and 1960s, Mo and his uncles Hashim, Azam, and Roshan dominated the sport by capturing almost every major professional squash competition.
In 1963, following his win in the British Open, Mo secured the backing of United States President John F. Kennedy to move to the US and take up a position as a squash professional at the Harvard Club in Boston.
He spent most of the years following his move to the States playing and teaching squash's North American (i.e. hardball) game.
Though this change of both environment and emphasis would exact a price in the form of Mo's straight-set semi-final loss to Michael Oddy in the 1964 British Open, it was undoubtedly a smart career move for this volatile extrovert, whose exceptional shotmaking skills were perfectly tailored to the North American game.
While the formidable records of both Hashim and Azam were predicated on solid error-free play and relentless retrieving, Mohibullah evinced a crowd-pleasing flair for the spectacular.