Former WAFA captain Martin Antwi was the difference scoring the only goal of the match for Inter Allies in a 1-0 victory on Sunday at the El Wak Stadium.
Antwi converted a free-kick from long range which beat goalkeeper Razak Abalora between in the 50th minute of the match.
The player missed the corresponding fixture due to injury but was at his best to hunt his former employers where he captained for two seasons.
The defeat proved costly for the Academy Boys who got toppled as league leaders and were overtaken by Aduana who thumped Bechem United 3-0 at home.