He won the schools championship in 1967, before joining AS d'Ariana, then trained at the Espérance Sportive de Tunis where he continued his entire career.

In 1987, on the occasion of his return to the national team, he managed to qualify Tunisia for the 1988 Summer Olympics by scoring two goals against the Morocco.

[6] On 24 December 2011, Dhiab became Minister of Youth and Sports in the government of Hamadi Jebali, where he was assisted by a Secretary of State, Hichem Ben Jemaa.

On 6 July, he made headlines by not shaking the hand of Sports Minister Abdallah Kaâbi during the presentation of the Tunisian Cup, after having criticised the management of incidents on the sidelines of a third division match.

A disagreement arises between the minister and the president of the Tunisian Football Federation (TFF), Wadie Jary,[8] on the basis of the choice of the national coach.

Indeed, with the support of FIFA, which prohibits any political interference in the affairs of the federations, Jary does not consult the minister and hires Mokhtar Tlili as a special advisor and Nabil Maâloul as coach.

However, Maâloul's resignation, the miraculous qualification of the national team, Jary's response to FIFA in which he denies the interference of the ministry and the intervention of the head of government temporarily calm the situation.

He is also a businessman,[9] and Tunisian magazine Réalités reported in 2004 that he was trying to start his own satellite sports channel.