Jun 5, 2023

CARLSBAD, Calif. (June 5, 2023) – In her professional debut, the 20-year-old who had been the top amateur in the world for 141 weeks used Nippon Shaft N.S.PRO 850GH in her irons (5-PW) to win the Mizuho Americas Open.

The Champion won on the second playoff hole after shooting a 9-under par total with rounds of 70-69-66-74—279, thus becoming the first woman in 72 years to win in her professional debut. A week after winning her second consecutive NCAA championship as a college sophomore, she took home a winner’s check of $412,500.

“Nippon Shaft is very proud that a young woman who was the world’s top amateur a week earlier could win a professional event using Nippon Shaft products,” said Hiro Fukuda, sales and marketing for Nippon Shaft. “We have no doubt she is going to continue to win.”

More than 200 players on the PGA Tour, LPGA Tour, European Tour and Korn Ferry Tour use Nippon Shaft’s MODUS³ series steel shafts to help gain their desired distance, accuracy, and trajectory.

Nippon Shaft products are available globally either as stock or custom shafts in many of the world’s top iron brands. Details of these can be found at

Based in Yokohama, Japan, Nippon Shaft is the No. 1-selling steel shaft in Asia. Nippon Shaft is a privately-held subsidiary of NHK Spring Co. LTD, a Japanese automobile parts manufacturer. Nippon Shaft’s North American headquarters is in Carlsbad.