Austin Ernst leads the tournament, Sei Young Kim leads the race for US$1 million and Lydia Ko has edged closer to everything else that's at stake this weekend.
So as expected, the LPGA's finale for 2015 is off to a hectic start.
Ernst shot a 6-under 66 Thursday to take a one-shot lead over South Korea's Mi Hyang Lee after the opening round of the CME Group Tour Championship. Kim, part of a group two shots off Ernst's pace, would win the season-ending $1 million bonus if the tournament ended in its current order. Ko shot a 69 to move closer to earning player of the year honors, plus the scoring and money titles.
"I've just got to think of it as another tournament," said Ko, the 18-year-old from New Zealand who holds the No. 1 ranking. "That's what I said for all the majors. I've got to focus on one shot at a time and not think like it's a major so it's more special and all that. Obviously, it is, at the end of the day. But it's another tournament. We've got the world's best golfers here, the top players are here, it's a great field, it does feel like a major.
"And with everything that might come along on Sunday, it might be more than that."