Korda rebounded from an opening 72 with a dazzling 6-under 66 at Tiburon Golf Club on a sunny, windswept day in south Florida. The bogey-free round included a hole-out for eagle on the third hole. The World No. 1 headed to the range after Thursday’s round and came away with one simple swing thought.

Sometimes, one little swing thought can change everything—even for the best player in the world. World No. 1 Nelly Korda bumbled to an even-par 72 on Thursday at the CME Group Tour Championship, a round well below her standard.

The usual suspects fought back into contention Friday in the CME Group Tour Championship. After Nelly Korda, Jeeno Thitikul and Charley Hull combined to go even par Thursday at scorable Tiburon Golf Club, the trio nearly averaged 66 on Friday to move into the top 10 going into the weekend.

Angel Yin rammed in a 30-foot par putt on her opening hole, setting the tone for a day of big putts and 3-under 69 that gave her a two-shot lead Friday in the CME Group Tour Championship and the chase for the $4 million prize.

Angel Yin has a two-shot lead at the halfway point of the CME Group Tour Championship and the chase for the $4 million winner’s check

Fishburn, who already has locked up his card for next year, was at 11-under 131 and led McNealy and Lee Hodges (63) going into the weekend. Michael Thorbjornsen had a 69 and was the only player who had to face Seaside on Friday who was among the top five.