DORAL, Fla. — The PGA Tour and its long relationship with the Doral Resort outside of Miami have come full circle, from a 54-year tenure that ended rather sadly a decade ago to a return under the same title sponsorship with an event as big or better than before when it was known as the WGC-Cadillac Championship. This week it is simply the Cadillac Championship , a $20 million signature event that will have a field of 72 players and is similar to the old World Golf Championships model that the PGA Tour abandoned following the 2022 season. There are 18 players in the field who played at Doral prior to the Tour’s departure after the 2016 event, including winners Adam Scott and Justin Rose. But how we got here is a story itself and it involves the current President of the United States, a former commissioner of the PGA Tour and the title sponsor.…