Hearts of Oak lost their first Premier League away match of the season after WAFA thrashed them 3-0 at the Red Bull Arena at Sogakope.
A brace by Komlan Agbegniadan and a Charles Boateng strike gave the hosts a well deserved victory for the hosts.
Hearts failed to extend their lead at the top of the table after a poor first half caused the Phobians an important three points.
The results moved WAFA to fifth place on the log with Hearts set to drop from the summit if Wa All Stars win on Sunday.