Coach Portrait

John F. Cassidy III, PGA

Director of Instruction 2025 Chapter Teacher of the Year
PGA Crest

Dupont, WA
The Home Course, Dupont, WA

About John

John has 30+ years of experience in the game of golf, he’s been fortunate to compete and travel to amazing places all over the world. His teaching philosophies have formed by combining his personal experiences playing and the knowledge gained by working with some of the best instructors in the country. John's playing resume includes competing in 8 USGA national events (4 US Amateur Public Links Championships, 2 US Amateurs, 1 US Mid Am, 1 US State Team Championship), and 1st person to compete in the US Amateur, US Public Links, US Mid Am and NCAA division I National Championship in the same year. John was All Conference and team Captain at the University of Nevada 2004-2006. Competed on PGA Tour Canada 2008-2011. Washington Open Champion 2014. Competed in the PGA National Assitants Championship 2016,2017,2018 and the PGA National Club Professional Championship in 2019. John has won multiple Chapter and Section Player of the Year awards and has been recognized as the Western Washington chapter Teacher of the Year for 2025.

During his career, John spent 16 years learning and working on his game from Shawn Callahan former lead instructor at the Butch Harmon school in Henderson, NV. In addition, John has spent time with Mike Bender, EA Tischler (co-creator with Mike Adams of the Bioswing Dynamics program), Jonathon Yarwood former David Leadbetter Academy and tour coach, Scott Cowx 2019 Canadian Teacher of the Year and tour coach. John is a Scott Cowx certified instructor and certified in the Forces In Motion bio dynamics program from Sasho Mackenzie and Dr. Phil Cheetham.

John's Own Your Swing system uses Biomechanical screening to assess each individuals body function allowing his students to fully understand their most efficient way to swing the club from the first lesson on. His theory is if you aren't measuring, you're guessing. The Own Your Swing screening takes less than 15 minutes, and quantitatively shows each student their ideal grip, trail arm fold, backswing plane, downswing plane, posture, stance width, foot flare, ideal pressure shift and timing of pressure shift, as well as teir dominate and secondary force multipliers. He combines this with the use of Sportsbox AI and GC Quad to measure what connot be seen to create the full picture and understanding for each student. Once the swing blueprint is established, the focus turns to owning "impact skills" (path, club face, low point, strike on the face control) which completes the circle and simplifies controlling/owning the ball flight. Through his system of screening, measurements and drills, it has dramatically decreased the time it takes for students from beginner to professionals to improve, understand and own their swings.

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Testimonial:

My ball striking is the best its ever been, not just any coach could have done for me. Mastering shaping the ball is now possible and I'm conscious of the club face and path which is something I've never had thanks to you coach.

Andy K

Testimonial:

I played Indian Summer today with a guy and he commented that my short game was looking really good. It felt really easy to hit all the shots around the green we've worked on, even out to 40 yards or so. Thanks for the fantastic lesson!!

Marvin K

Testimonial:

I made it to State for the first time!! Yesterday I had a great round which was enough to get me into state! Thanks for all of your guidance and help I don't think I would've made it without you.

Wes E

Testimonial:

The putting lesson you gave to my brother has completely changed his putting for the better. We went out the day after his lesson and he 1 putted 7 times!! 7! Thanks again John, you've made a huge difference.

Greg V

Testimonial:

I really appreciate the work you're doing with Jaden. We've seen a huge change in is enthusiasm. We are grateful and thankful and truly appreciate you helping Jaden feel good an excited about is golf.

Jake C
John's Experience

Helping players achieve their goals.


Getting Started

Avoid embarrassment on the first tee

Get comfortable for business golf

Learn the basics


Having More Fun

Have more fun on the course

Connect with golfers of similar skill

Connect with golfers of similar age


Improving Your Game

Break 80

Break 90

Add 10 yards

Prepare for Tournament Golf

Earn a college golf scholarship

Get swing diagnostic testing

Make the high school golf team

Improve your Short Game

Break 100

Students & Lessons

Coaching Services

Player Type

Youth

Adult

Male

Playing with disabilities

Teen

Female

Senior

Session Type

Individual

Group

Skills & Tools

Improve with John.

SkillsTools
Putting
Tournament Strategy
Speed
Physical Assessment
Short Game
Club Fitting
Wind Play
Full Swing
Course Strategy
Wedge Play
John's Facilities

The Home Course

Dupont WA

*Coaching available to public

2300 Golf House Rd, Dupont, WA 98327-8833

Begin Your Journey

Work with John