Nobody expects 1,000-1 shot Pádraig Harrington to win the US PGA but he remains the ultimate competitor ahead of 88th Major

They say that roughly 98 per cent of the atoms in the human body are replaced annually, but while that might mean that Pádraig Harrington is not the same person who played his first US PGA 29 years ago, he jokes he's like Trigger's brush and as enthusiastic as ever to compete this week.