It's no secret that some people in the sport believe that the world rankings format should be scrapped. They don't like the two-year "rolling" period that is slow to reflect changes among top players.
Under the existing calculations,
"Well, to be honest I didn't know that," he told reporters on Wednesday, adding: "I haven't been thinking about No. 1 that much, obviously."
All four were scheduled to tee off around 10:30 a.m. Pacific time or later.