who were the players in the singapore open for darts?
?, ?, ?, ?, ?, ?, sgd 1,600, sgd 800, sgd 1,600, sgd 800, sgd 1,000, sgd 500
who were the runner-ups, of those players?
?, ?, ?, sgd 800, sgd 800, sgd 500
of those, who does not have a nationality listed?
?