By Larry King TROON, Scotland (Reuters) - Phil Mickelson has always been known for his laid-back style and it is exactly that approach that is holding him in good stead at this week's British Open. Mickelson led the British Open at Royal Troon on Friday, at 10 under par, after coming agonizingly close to scoring the first-ever 62 in a major championship on Thursday. Alongside his 2013 victory in the British Open at Muirfield, the scores are something of a vindication. More...