The focus is on Lydia Ko and Inbee Park in their battle to see who will win the season-long Race to the CME Globe and its $1 million bonus, but there is also the matter of who will win the season-ending CME Group Tour Championship. Here's how things stand after 54 holes in Naples, Fla., where Cristie Kerr and Ha Na Jang are tied for the lead.
Leaderboard: Cristie Kerr (-13), Ha Na Jang (-13), Gerina Piller (-11), Lydia Ko (-11), Lexi Thompson (-10), Karine Icher (-10), Brittany Lincicome (-10), Inbee Park (-9), Ai Miyazato (-9).
What it means: Park (67) picked up two shots on Ko (69), tightening their race for the $1 million bonus. But it was Kerr with the round of the day, a 6-under 66. She briefly lost the lead when Jang eagled the 17th hole, but Jang's bogey on 18 left them tied at the top.
Round of the day: After bogeying the first hole (a par 5, no less), Kerr birdied five of the next six, including four in a row to turn in 32. She started the back nine with a birdie at No. 10, but managed only one other circle - at the par-5 17th, the rest of the way.
Best of the rest: Nine players shot 67, including Thompson (T-3), Piller (T-5) and Park (T-8). Piller was cruising on six birdies and no bogeys until she got to the final hole, where she missed a short par putt. Thompson birdied three holes on each side, including three of the four par 5s, with a lone blemish of a bogey at the par-4 11th. Park played the par 5s in only 1 under, but made hay with two birdies on the par 3s. Overall she had six birdies and one bogey.
Biggest disappointment: Jaye Marie Green was on the fringe of contention at 4 under after 36 holes, but she plummeted 30 positions on the leaderboard after a 4-over 76. Two double bogeys - at the par-4 seventh and ninth - were the culprit.
Main storyline heading into Sunday: Kerr, who won the Kia Classic in March, would love to make this her first multiple-win season since 2010, when she was ranked No. 1. She'll be paired with Jang, 23, a rookie in search of her first LPGA win. But the bigger focus will be on Ko and Park and the $1 million bonus for winning the season-long race. Last year Ko took the tournament and the bonus, making for a $1.5 million payday, the most lucrative in the history of women's golf.
Quote of the day: "We both had really, really good seasons and somebody is going to become 1 and somebody is going to become 2. That's just the way it is. I'm just trying to tell myself I had a really good enough season this year. I've earned what I wanted to earn, what I wanted to achieve. The rest is just a bonus." - Park