Jason Dufner
Age: 35
Ryder Cup caps: 0
Cup credentials: One of America's debutants, suggestions that he might be overawed by the occasion appear to be wide of the mark judging by how he's performed this season under pressure. He won his first PGA event at the Zurich Classic of Nelson. And a bit like buses, win No.2 was just around the corner in the Byron Classic. He was fourth at the US Open.
Did you know? Dufner, who has a degree in economics, took up golf in his late teens.