With a tumultuous build-up and a succe sion of frequently jarring pre-tournament media engagements all but done, the LIV Golf Invitational Series will tee off at the Centurion Club in Hertfordshire.Former world number one Dustin Johnson and Phil Mickelson are among the leading lights taking part in the competition, which is not being recognised by the Official World Golf Rankings (OWGR).Major...