Mensah played in the 1967 Africa Clubs Cup final which resulted in a 3–3 draw and a replay was scheduled, however the Ghana Football Association never informed Asante Kotoko.

As a result, Asante Kotoko did not participate in the replay and the trophy was awarded to Zaire's TP Engelbert in their absence.

[1] Mensah was largely controversial in Ghanaian football and would mock opposition players by reading a newspaper whilst goal-tending.

He often wore a cap during football games causing some opposing players to physically remove it from his head believing it was bringing them bad luck through the use of juju.

[3] During a qualifying game against the Liberia national team in April 1970, the player had missiles thrown at him by the home crowd.