All she did was win her fifth LPGA title of the season, regain the No. 1 ranking from Inbee Park, and become the youngest player on any professional tour to reach 10 career wins.
Nancy Lopez held the previous LPGA record when she won her 10th title at 22 years, 2 months and 5 days in 1979.
Horton Smith (1929) holds the record on the PGA Tour at 21 years, 7 months.
Ko is 18.
Coming off a rookie season that featured three wins, including the season-ending CME Titleholders, Ko has even surprised herself with her unbelieveable encore in 2015.