Mahatma Otoo expects Hearts of Oak to be sharper after opening their Glo Premier League account with a win away to Berekum Arsenal.

The Premier League title contenders were posted the impressive on Saturday at the Robert Mensah Stadium in Cape Coast with Mahatma scoring the winner just 8 minutes into the game.

Mahatma acknowledges that the Phobians were not at their best in the second half but believes improvement were be made once the squad plays more games.

"It's the first leg match so things are expected. Players would have to play continously to gain form," he said.

"As the matches go on, we would take it game after game."

Hearts of Oak will be at home to Mighty Jets in the derby on Sunday at the Accra Sports Stadium.