Wigan Athletic coach Steve Bruce said Amr Zaki doesn't receive enough on-field support from his teammates. The Latcis' have alarmingly lost four consecutive Premier League games, leaking nine goals in the last three. "We have an England centre forward and Zaki who has done very, very well," Bruce said. "Of course it's a concern the lack of people contributing goals. We can't just rely on two goalscorers. It is a concern especially as we've dropped into the bottom three. We have to improve." Wigan are now in the relegation zone, nevertheless, the Egyptian striker is topping the scoring charts with seven goals. Bruce's men are keen to put an end to their winless run when they take on Portsmouth on Saturday. Pompey boss Tony Adams has also acclaimed Wigan strike duo Emile Heskey and Zaki. "They are both playing out of their skin," said the former England defender.