The Unwritten Rule of Women's Golf The AIG Women's Open has reached its midpoint, with South Korea's Haeran Ryu in pole position to become the fifth woman in history to claim three majors in a calendar year.
Her second round score of 66 put her one shot ahead of Japan's Shiho Kuwaki, leaving the rest of the field scrambling to keep up.
The majors have long been the pinnacle of achievement for professional golfers, and women's golf is no exception.