A goal in each half courtesy Obed Owusu and Frederick Boateng was all the Kumasi-based side needed to end a difficult few weeks which saw them go two matches without maximum points.
But for Wa All Stars, the defeat means they have now gone five games without a win. Their last victory coming against Berekum Chelsea on 1st April.
Kotoko's captain Obed Owusu led by example by opening the scoring on the stroke of half-time with a great finish.
The hosts fought hard to restore parity but Frederick Boateng scored in 90th minute to seal victory.
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