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.

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.

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.