 The final major championship of the year is officially here. The Open at Royal Troon Golf Course in Scotland got underway early this morning, with the first group teeing off at about 12.35 a.m. and has had groups continue to tee off throughout the early hours of today. World No. 1 Scotty Scheffler and Tiger Woods are among the headlining competitors, as is Rory McIlroy, who's trying to bounce back from his loss to Bryson DeChambeau at the U.S. Open.