Hearts of Oak moved level on points with leaders, Asante Kotoko despite having played one game more than their rivals after winning 1-0 on Sunday.
The Phobians defeated Berekum Chelsea by the slim victory courtesy a second half strike by striker Gilbert Fiamenyo.
However, the visitors will feel hard done by a decision by referee Cecil Fleischer after they had their equaliser chalked off for a foul on goalkeeper Philemon McCarthy.
David Duncan's side are now level with Kotoko, who play their match-day-6 fixture on Thursday against Hasaacas.