The Proof is on the Leaderboard

Tour-proven on four continents.

The Autoflex and Autopower shafts are in the bags of winners on every major tour — from our home tour in Korea to the JGTO, Asian Tour, DP World Tour, and the PGA Tour Champions.

50+Professional Wins
4Major Tours
120+Tour Staff Players
13Years on Tour
Official Partner · 2026–2027

Yana Wilson

LPGA Tour rookie and No. 3 long hitter on tour — officially partnered with Dumina for the 2026 and 2027 seasons. Yana games the AutoPower Snipe in her driver, fairway woods, and hybrids.

Shaft

AutoPower Snipe

Driver · Fairway Woods · Hybrids

2026 Highlight

Chevron Championship

Birdied all five par-5s in Round 3 · #3 Long Hitter on LPGA Tour

In the Bag on Tour

AutoFlex has appeared in the bags of these tour professionals.

LT

Lee Trevino

PGA Tour Champions · USA

World Golf Hall of Fame · 6× Major Champion · Gamed AutoFlex in his Callaway Mavrik driver at Dec 2023 PNC Championship

JW

Jimmy Walker

PGA Tour · USA

2016 PGA Championship winner · Switched to AutoFlex SF505XX in 2023 · Led RBC Heritage through 36 holes

FC

Fred Couples

PGA Tour Champions · USA

1992 Masters Champion · 15 PGA Tour wins · 14 PGA Tour Champions wins · AutoFlex for his signature tempo

EE

Ernie Els

PGA Tour Champions · South Africa

4× Major Champion (2× U.S. Open, 2× The Open) · World Golf Hall of Fame · AutoFlex on PGA Tour Champions

JY

Ji-yai Shin

JLPGA / LPGA · Korea

Former World No. 1 · Multiple JLPGA and LPGA wins · Dumina AutoPower staff player

MW

Michelle Wie West

LPGA · USA

2014 U.S. Women's Open Champion · Gamed AutoFlex SF505X at 2021 U.S. Women's Open · "Closest thing to a magic wand"

BG

Branden Grace

LIV Golf · South Africa

DP World Tour winner · First player to shoot 62 in a major · Put AutoFlex in play at 2021 PGA Championship

AS

Adam Scott

PGA Tour · Australia

2013 Masters Champion · 14 PGA Tour wins · First Tour pro to play AutoFlex in competition (Jan 2021, Farmers Insurance Open)

JS

Jenny Shin

LPGA · USA

LPGA winner · Fitted at Dumina HQ in early 2016 · Won first LPGA title weeks later at Volunteers of America Texas Shootout

Tour Milestones

Defining moments on Tour.

LPGA · 2016

Jenny Shin — First LPGA Win

Jenny Shin visited Dumina HQ to refit her driver in early 2016. Weeks later she claimed her first LPGA title at the Volunteers of America Texas Shootout.

PGA Tour · 2021

Adam Scott Debuts AutoFlex

Adam Scott put the AutoFlex SF505XX in play at the Farmers Insurance Open — the first PGA Tour player ever to compete with the shaft, reporting his fastest speeds ever.

PGA Tour · 2023

Jimmy Walker Leads RBC Heritage

After switching to AutoFlex SF505XX in both his driver and 3-wood, Jimmy Walker led the RBC Heritage through 36 holes and reported ball speed jumping into the 180s.

PGA Tour Champions · 2023

Lee Trevino Games AutoFlex at PNC Championship

Hall of Famer Lee Trevino put the AutoFlex shaft in his Callaway Mavrik driver at the 2023 PNC Championship — choosing it for its lighter weight and soft flex to match his senior swing speed.