As golfers play three different courses over the first three rounds and on different days, the tour is trying to ensure that everyone plays each course under the same set of rules.
McNealy hit a spectacular fairway-wood approach at the iconic 18th hole at Pebble Beach, but perhaps just as impressive was the majestic club twirl the former star amateur golfer unleashed from the fairway.
For the second straight week, Spieth entered the final round with the lead. And for the second straight week, Spieth left the course without the trophy.