TheStack

The Stack Learning Library is full (!!) of this gold. Stackers have full access. Talk about value 🤯

Limited drop!!! Georgia green fastener & pouch 🔥 Celebrating our favorite week of the year 🎉

A nice nod from Mike! Thank you! Stack Wedge is something we are so proud of — and, we’re already looking forward to more features and updates! If you haven’t tried Stack Wedge yet, you’re missing out. Go open that part of your Stack App, and get dialed! ☎️

@TheStackSystem @SashoMacKenzie @jertybird One of my all-time favorite profiles…..and an @GJ_AC writing award winner. scoregolf.com/features/the-m…

@MattFitz94 has one of the fastest backswings on Tour—helping him generate 123 mph clubhead speed in this swing (Jan 2023). What’s underrated is the skill required to rapidly transition: de-activating backswing muscles and sequencing the downswing. In the clip that follows, I explain the mechanics behind a faster backswing—and how to use it to gain speed.

Yes!! We wouldn’t forget about our loyal friends. Two options. 1. Post a reel to IG that features TheStack, Stack Radar or The Stack App and tag us. And we’ll send you one free! Easy. Do you have an IG account? 2. You can purchase them directly on our website, leading up to The Masters. (While supplies last)

@TheStackSystem Existing Stackers can’t get a green tip?

Limited drop of Georgia Green!! They’re cool. They won’t last.

We’ve gained a lot of followers lately. So we’d like to re-introduce our founders @SashoMacKenzie and @jertybird Sasho- Golf’s foremost biomechanist, Dr. Sasho MacKenzie is the research practitioner behind the world’s top golf coaches - his work and theories have driven a scientific, evidence-based revolution in golf instruction and movement training. Sasho’s area of expertise is the training and biomechanics of speed generation. The Stack System allows Sasho to share his research findings and training wisdom directly with you, using the same tools, techniques, and nuances that he uses to speed train Tour players he has consulted. Sasho is an Engineering Consultant for PING and a Biomechanics Advisor and Software Developer for Footjoy.  He has published over 20 golf related research articles in scientific peer-reviewed journals and has been invited to speak to golf instructors for the PGA of Australia, Great Britain & Ireland, Spain, and the French Golf Federation. In 2018, Dr. MacKenzie was the Key Note speaker at the World Scientific Congress of Golf. He is a regular contributor to Golf Magazine and has been a featured guest on countless other golf podcasts, international radio shows, and television episodes. In addition to golf, Sasho has worked with multiple MLB teams as a biomechanics/bat fitting consultant – including the L.A. Dodgers. Dr. MacKenzie is a professor of Sports Biomechanics at St. Francis Xavier University in Antigonish, Nova Scotia where he also puts his expertise into action, having won back-to-back club championships in 2020 and 2021. Marty- Marty is a golf generalist, a PGA of America member, and in his 22nd year as an engineer at PING.  Marty was the lead designer of the G30 and G410 drivers, co-inventor of the iPING Putting App, Ballnamic golf ball fitting tool (ballfitting.com), PING Co-Pilot fitting software (pingcopilot.com) and is a named inventor on over 130 patents.  Marty is the co-host of the PING Proving Grounds Podcast along-side Shane Bacon. Concurrent with his engineering career, Marty has taken his technical knowledge and training efficiency to the course.  He's played in 6 Major Championships, most recently the 2020 US Open at Winged Foot.  Marty made the cut in the 2019 PGA Championship at Bethpage Black and was a member of the 2011 and 2019 victorious PGA Cup Teams.  He has also played in the Waste Management Phoenix Open ('20) and the Shriners Hospitals for Children Open ('10, '11, '15, '16) along with 2 appearances at the TopGolf World Championship in Las Vegas.  Marty is also 5-time defending club champion at Wildfire Golf Club.  Marty is the 2025 Southwest Section PGA Player of the Year. Marty’s passion is building solutions for golf's myriad of challenges.

@millerak42 @SashoMacKenzie 🧠🔥👌🏼

Hey @SashoMacKenzie! I made the switch to heads up putting and in two practice sessions with @TheStackSystem putting I hit 0 SG: Putting against tour. I tried on course today for 9 holes and basically hit the same level. I’m a convert!

@ryanmouquegolf Awesome!

Amazing testimonials from happy students! Thank you to all. I very much appreciate you choosing me to help you with your game, I will never take it for granted I try to work as hard as I can to get lessons back in a timely manner with 100% effort in every lesson I hope you can see that when I send your lesson back 🙏

“The Science of Speed”, a six-part email series by @SashoMacKenzie can be accessed here: thestacksystem.com/pages/science-… Don’t sleep on this one. The content is 👌🏼

@PGATOUR @MattFitz94 💣

Club twirl. Co-leader @MattFitz94 is feeling it. 📺 NBC

@Fit_For_Golf The best!!

Random workouts usually lead to random results.❌ The app gives you a structured plan and progression.📱 Try it for 30 days free on the monthly subscription and see how it fits.🏋️ Free Trial:fitforgolf.app/free-month

Matt Fitzpatrick wasn't always known for speed. With The Stack System, he added 9 mph of clubhead speed leading up to his 2022 U.S. Open win. He continues to put in the work. At his Valspar Championship win this past weekend he finished: ✅ 5th in Strokes Gained Off the Tee ✅Tied for 3rd in Driving Accuracy He recorded 182 mph ball speed twice on Sunday, including the 18th hole. 👏

2026 Valspar Championship, win no.12 ✅ Add it to the list ✍️

Big drives en route to a big win! Well done, @mattfitzpatrick and team! Even coming home, needing a birdie, Matt didn't shy away from speed - recording 182 mph ball speed on his drive at 18. His average speed for the year to date in tournament rounds is 119.2 mph and we couldn't be more proud!🏆

That winning feeling. 🏆