By Phil Casey What a difference a year makes. Twelve months ago Jon Rahm headed to Augusta National as the winner of three of his first eight tournaments of the year, started with a four-putt double bogey and still went on to win the Masters. One year on, Rahm will make the drive down Magnolia Lane as a member of the Saudi-backed LIV Golf League and with just five of their 54-hole events under his belt before defending his title. The change is all the more startling given Rahm’s previous publicly stated opinions on LIV’s format and his claim that he played golf to win titles, not money, claims…