Mark Schwarzer will now have to fight harder than ever to keep his spot as the Socceroos number one custodian. The Fulham goalkeeper has been almost ever-present for his country over the last five years and is not about to give up his position without a fight, despite the talent coming through the ranks. Although Schwarzer is likely to keep his spot for the Aussie's World Cup qualifying campaign, the future holds no certainty for the former Middlesbrough favourite. "It's been a little bit of a concern," he told the Herald Sun. "There are goalkeepers out there who are talented goalkeepers, but if you're not playing week in, week out football, then it's very difficult to be chosen for your national team." The two players causing Schwarzer's concern are Adelaide United's Eugene Galekovic whose performances recently have been outstanding, especially in the Asian Champions League, and Michael Petkovic who is the first choice keeper for Turkish club Sivasspor. The fact that these two players are the first chosen in their respective squads gives Schwarzer real reason to be apprehensive but the upcoming World Cup qualifier against Qatar will be the only thing on his mind at present.