In the summer of 2020, Lydia Ko was in the midst of a severe slump. Once the top-ranked player in the world, Ko had slipped to No. 50 in the Rolex rankings as she hadn’t won a tournament since 2018. So, she made a change. Ko sought out the name of one of the most well-respected instructors in the game — Sean Foley. The GOLF Top 100 Teacher has