Phil Mickelson takes you inside the diet he hopes reinvents his career

PORTRUSH, Northern Ireland — Phil Mickelson, always a serial tinkerer with his golf game, has spent a lifetime reinventing himself. Mickelson’s latest version of himself — on full display at Royal Portrush in advance of this week’s British Open — is 15 pounds lighter, with more bounce in his step and clarity in his soul...