He also ran in the 4×400 metres relay at the competition, but the men's team (including Georges Kablan Degnan, Avognan Nogboun and René Djédjémel Mélédjé) was knocked out in the semi-finals.

He lost his continental 400 m title to Innocent Egbunike at the 1985 African Championships in Athletics, although Tiacoh still managed to win a silver medal.

However, he only managed to finish in seventh place in the 400 m final as he could not match his previous form (his semi-final time of 44.69 s would have been enough to gain the bronze).

Tiacoh represented his country at the Olympics for a second time, but he could not repeat his medal success and was eliminated in the quarter-finals after finishing in fifth place.

[2] He helped the Ivorian relay team to the Olympic semi-final, but they finished in sixth position and did not qualify for the final.