Wales manager John Toshack is looking to rally his troops ahead of their friendly clash with Bulgaria.
Toshack has called for more from many of his selected squad as he looks to make a decision on his starting line-up, and none have received more encouragement than Derby striker Robert Earnshaw.
"I don't think we have seen the best of Earnie under my management of Wales," he stated.
"He maybe has not achieved the potential he showed as a young player, but he has been on the international scene for some time now and we need to see more from him."
Toshack has also called for West Ham new-boy Craig Bellamy to prove his worth, after he named the former Liverpool striker as Ryan Giggs' replacement as skipper.
The Wales boss says Bellamy is likely to benefit from a regular place in The Hammers' starting line-up, after failing to establish himself in Rafa Benitez's Liverpool side.
"Craig has just completed his third pre-season with three different clubs over three years. That must be unsettling," Toshack continued.
"There is never ever a doubt over his commitment, I have spoken to him a couple of times and he is as keen as ever to give his all for us.
"At Liverpool he maybe didn't get as many games as we would have liked, so I just want him to have a settled time at West Ham, a long run of matches and the chance to be constantly involved.
"He is looking forward to captaining the side now and in fact we have probably seen his best performances for Wales when he has had to stand in for Ryan."