Jessica Thompson became the youngest - ever winner on the LPGA Tour . The year - old clinched a five - stroke victory at the Honda Classic . The Florida resident , who became the youngest player to qualify for the women 's U.S. Open in 2007 at the age of 12 , finished 17-under-par after carding a final round of 70 to beat off competition from compatriot Tiffany Joh . Thompson participated at the Women 's U.S. Open aged 12 .
Jessica Thompson became the youngest - ever winner on the LPGA Tour . The year - old clinched a five - stroke victory at the Honda Classic . Thompson participated at the Women 's U.S. Open aged 12 .