In this episode of On The Mark, host Mark Immelman is joined by David Bertoli (aka “Davide”) for a deep, visual-first breakdown of how the golf swing actually works in 3D—not as frozen “positions,” but as moving phases driven by what the body is doing internally.

David shares how his team built a 3D system that reveals the skeleton, muscles, and fascia in motion—so golfers and coaches can stop chasing a Rory/McIlroy “look” and start optimizing their movement pattern.

A major focus is David’s framework: the Six Phases of the Golf Swing, built around Center of Mass (COM) movement + Anatomy Trains / fascia chains. They explore why the pelvis is the engine, how COM moves (horizontally and vertically), why maximum unweighting matters for speed, and how “carefree” phase-based movement beats “careful” position-chasing every time.

In This Episode, You’ll Learn:

1. ✅ Why 3D changes everything: stop studying the club “outside,” start understanding the body “inside”
2. ✅ The difference between positions vs phases (and why a golf swing is a “moving sculpture”)
3. ✅ What Center of Mass actually is, where it sits, and why the pelvis is so tied to it
4. ✅ How COM moves in an “almost infinity-sign” pattern (and why it anticipates the club)
5. ✅ Why elite players get lower than address in transition (and how that fuels speed)
6. ✅ What fascia is (and why the body is a “full web”) + how anatomy chains store/release energy 
7. ✅ The Six Phases: from address → shaft parallel → pelvis rotation → top → max unweighting → impact → hands chest-high
8. ✅ A huge myth at impact: why you should not try to open shoulders as much as the ribcage, and
9. ✅ The “eccentric load” trio: core stretch, lead-shoulder stretch, lead-wrist stretch (and why thoracic rotation matters.) 

Key Takeaways

• Stop copying positions. Many great swings look different—but the best swings move through similar phases.
• Pelvis movement predicts swing quality. If the pelvis (and COM) moves well, the rest organizes more naturally. 
• Speed requires going down before going up. The best players drop lower than address, then push up fast into impact.
• Fascia matters. Efficient golf is stored energy → redirected forces → released energy, not “hit the ball harder.”
• Carefree beats careful. When golfers chase positions, they get tense; when they move through phases, they flow. 

After you have listened to this podcast, go to YouTube, search and subscribe to Mark Immelman and watch the show to see David's graphics and presentation of his golfswing research and how his "Phases of the Swing" work.

In this episode of On The Mark, host Mark Immelman welcomes Arjun Malik—one of the leading voices helping grow the game in India—for a deep dive into the part of golf improvement that most players skip: routines and structure. 

Mark and Arjun's conversation quickly turns into a practical masterclass on what happens before the shot, after the shot, before the round, and after the round—and how those habits separate serious golfers from weekend “range ball beaters.”

Arjun shares his own journey as a self-taught golfer who struggled with “quantity over quality,” including a memorable tournament warm-up where he hit ~300 balls and was exhausted by the back nine. That experience shaped his coaching mission: build systems that help golfers prepare smarter, track performance honestly, and show up on the course with confidence—not chaos.

In This Episode, You’ll Learn:

✅ Why many golfers work hard but don’t improve (the missing ingredient is structure)

✅ A simple post-round template to turn “I played bad” into real feedback

✅ The easiest stats to track (fairways, greens, misses, up-and-downs, 3-putts) and what they reveal

✅ Why golfers get so negative—and how to “count the good shots” to reset your mindset

✅ A fast post-shot reset: what to ask yourself so mistakes don’t multiply

✅ How to build a pre-shot routine that fits your learning style (visual vs auditory)

✅ Why your routine should be timed (example: 12 seconds) and trained in the off-season, and

✅ How Tour players “replace the bad with good” using rehearsals after the shot.

 Key Takeaways:

1. Less can be more. Improvement isn’t about endless reps—it’s about purposeful reps.
2. Stats beat emotions. Track a few simple numbers and you’ll know exactly what to practice next.
3. Credit the good shots. Most golfers only react to mistakes; better players reinforce the wins too.
4. Reset after every shot. A quick check (“did it start/finish where I wanted?” “what did I feel?”) keeps you present.
5. Your pre-shot routine is a trigger—not a performance. It should create one clear feel and a “ready” click.

Develop your routines and go from chaos to clarity on the course.  Download and listen or watch on YouTube - search and subscrbe to Mark Immelman.

In this episode of On The Mark, host Mark Immelman welcomes back Cordie Walker (last on the show in 2019) for a practical, no-fluff conversation on what actually moves the needle for your golf game: Speed Training with intent, how to make Real Swing Changes, Practice Structure, Course Management using Dispersion, and Wedge Gapping that holds up under pressure. 

Cordie shares his journey chasing 180 → 190 → 200mph Ball Speed, why most golfers “speed train” the wrong way, and how dedicated sessions (with a real warmup and real volume) raise your floor, not just your ceiling.

Then the conversation pivots into improvement that transfers: Get Better Feedback (video + data), Practice with a Purpose (technique vs skill vs performance), and build a Wedge System that makes “shot #3” a weapon. 

In This Episode, You’ll Learn:

• Why “intent” is the missing ingredient in most speed training (and what a real session looks like) 
• The #1 speed-training sign you’re actually going hard enough (yes—it should feel out of control) 
• How video changes everything: what you feel vs what you actually do 
• Why swing changes are harder than golfers think—and what it really takes to make them stick 
• A simple practice framework: Technique vs Skill vs Performance (and why most practice fails) 
• How great course management can free you up (and when “send it” actually makes sense) 
• Why dispersion is a shotgun pattern, not a “rifle”—and how to use it to play smarter, and
• A wedge gapping starting point most golfers skip (and why it’s killing your scoring.)

Key Takeaways:

1. Speed is trainable—if you train it on purpose. Dedicated sessions, real warmup, and enough volume matter.
2. Feedback is everything. Video + launch monitor data keep you honest and accelerate change.
3. Practice needs a goal. Decide if you’re working on technique, skill, or performance—then practice accordingly.
4. Course management isn’t “play scared.” Know your dispersion and make emotionless decisions—then commit.
5. Wedge gapping wins tournaments for regular golfers. Build baselines, stop swinging wedges too hard, and refine.

Download this simple to comprehend and easy to apply episode and share it with your golfing friends.  Also watch it as a vodcast on YouTube.  Search and Subscribe to Mark Immelman.

Most golfers don’t fail because they aren’t trying… they fail because they’re showing up to lessons with the wrong expectations, the wrong habits, and no plan between sessions.

In this episode of #OnTheMark podcast, Mark Immelman is joined by Chris Smith, a Master PGA Professional and Golf Magazine Top 100 Instructor, to break down 5 common mistakes that ruin golf lessons—and what to do instead so your next lesson actually turns into lower scores.

You’ll Learn:

• How to get more value from every lesson
• What to stop doing immediately (and why it’s holding you back)
• How to practice between lessons so improvements stick
• How to communicate with your coach so you leave with clarity, and The simple mindset shift that makes training “transfer” to the course.

The 5 Things (and the Fix):

1. No clear goal for the lesson → Fix: define a “win” before you arrive (shot pattern, contact, start line, scoring goal)
2. Trying to rebuild everything at once → Fix: one priority, one feel, one drill—stack progress over time 
3. Collecting swing thoughts instead of building skill → Fix: convert tips into a repeatable drill + a checkpoint you can self-diagnose
4. No plan between lessons → Fix: a simple practice structure (block → random → on-course challenge)
5. Expecting range success to instantly become course success → Fix: train pressure, variability, and decision-making—not just mechanics.

If you’ve ever left a lesson feeling hopeful… then lost it by the weekend—this one is for you. Like, Subscribe, and comment below: What’s the #1 thing you want your next lesson to fix?

In this episode of On the Mark, host Mark Immelman sits down with PGA TOUR winner Chris Gotterup to go inside the ropes—covering the real nuts and bolts behind elite performance: power, feel vs. technical thoughts, practice drills, putting improvement, and handling pressure when it matters most. 

Chris shares what was happening in his mind and body during his playoff win at TPC Scottsdale, how he trains for speed without getting “too technical” in tournament weeks, and why communication with his caddie is one of the biggest keys to performing under the gun.

In This Episode, You’ll Discover: 

• What playoff pressure actually feels like—and how Chris handles it in real time
• How Chris thinks about power (and the setup tweaks he uses when he wants more distance)
• Why he avoids technical thoughts during tournament weeks (and saves them for offseason work)
• The “guardrails” approach: shaping shots without over-complicating your swing
• Training aids he uses (band, wrist device, HackMotion) and why they help
• Course management for different venues—Augusta vs. Harbour Town (and why mini driver matters)
• Putting improvement: start-line work, 3-putt avoidance, and speed training with Tim Yelverton
• Mental game under chaos (Waste Management), plus a playoff mindset: play to win
• Chris’s favorite win breakdown—and what each victory taught him

Key Themes:

1.  Pressure Is Normal—It Means You Care Chris is clear: nerves show up at the highest level, and that’s part of competing.
2. Feel First (Tournament Week), Technique Later (Offseason) He’ll work on mechanics away from competition, but once the tournament starts, he commits to what he brought that week.
3. “Guardrails” Beat Constant Overhauls He stays inside a preferred shot pattern—then adjusts toward neutral when needed, rather than rebuilding mid-week.
4. Communication Is a Performance Tool When things get loud or fast, Chris slows down by communicating clearly with his caddie about target, shape, and intent. 

 Episode Takeaways

➡ Power is useful—but it’s only valuable if the next shot backs it up.

 ➡ Feel-driven golf gets more reliable when you keep your swing inside simple “guardrails.”

 ➡ Putting improves when you start with start-line, then build speed control and accountability.

 ➡ Under pressure, slow down by communicating clearly—target, shape, and intent.

If you want more episodes like this—where Mark goes deep on how the best players actually practice, think, and compete—subscribe to On the Mark and share this episode with a golfer who wants to improve their game.  Also, search and subscribe to Mark Immelman on YouTube.

Nick Biondi is a PGA Member and the Director of Golf Instruction at Radley Run Country Club in West Chester, PA. One of the most respected golf instructors in the country, Nick has over 20 years of elite teaching experience.  His quality instruction has helped him build a reputation for transforming golfers through a science-backed and data-driven approach. 

Nick joins #OntheMark to illustrate some game improvement insights from his new book, "Making the Turn.":

This podcast features golf tips and nuggets that will help you improve your Scoring Shots:

• Deciding who you want to be in golf
• Putting and Checkpoints for a consistent, repeatable and productive Putting Stroke
• Being Reactive vs. Over-thinking
• Chipping and Pitching insights incl. Data for success
• 3 Different Styles for Pitching, and
• Setup and Posture keys for consistent Strikes and Spin Control.

This podcast is also available on YouTube - search and subscribe to Mark Immelman.

Tyler Coonts is one of the leading young instructors in the game, and most certainly a leading "Online" golf instructor via Skillest.  Based in Las Vegas and mentored by George Gankas and Jeff Smith, Tyler preaches "Rotation" but joins the #OntheMark podcast to talk about Shallowing the Golf Club and how to do it correctly.

He talks about the following topics pertaining to the downswing and how the club should move:

• What is Shallowing the Club
• How does the Club Shallow
• What needs to Happen for the Club to Shallow
• What is the Correct Amount of Shallowing
• Playing Above, and Below the "Plane"
• Backswing vs Impact Work and Focus
• Overtake Rate and "Flipping" and
• Rotation and the Appropriate Side Tilts for success.

Tyler also illustrates how great ball-strikers shallow the club in the downswing.  Champions like:  Ben Hogan, Gary Player, Jack Nicklaus, Tiger Woods and Viktor Hovland.

This podcast is also available as a vodcast on YouTube.  Search and subscribe to Mark Immelman.

A Golf professional, NCAA Collegiate Coach, Author and Entrepreneur, Edgar Evans Jr. picked up golf at age 11 and never looked back. As the current Head Golf Coach at Morehouse College, he dedicates himself to building up men, winning championships, and leveraging his connections to provide world-class facilities for his teams.

He joins Mark Immelman to recap the 2026 Masters Tournament in Augusta, Georgia and share lessons from the competitors, and their play, that can help you play your best golf when it matters.

Edgar addresses the following game improvement elements as demonstrated by the world's best golfers:

• Patience in challenging circumstances
• Playing with and against better Competition for development's sakes
• Keeping a healthy Perspective on golf and results
• Productive Preparation and Practice
• Course Management, Process Control and Playing to your Strengths
• Self Belief and maintaining confidence when things don't go your way, and
• Handling Pressure and Fear with Poise.

Edgar uses examples and anecdotes from Masters Champions Rory McIlroy, Jack Nicklaus, Fred Couples, Bernhard Langer andScottie Scheffler as he revisits his time at The Masters with his Morehouse College Men's Golf Team.

Download and share this podcast, and watch it on YouTube - search and subscribe to Mark Immelman.

Seth Pepper is a former #1 Ranked Swimmer in the World, a USA National Champion and an American Record Holder. 

With his swimming career behind him, Seth is now a Motivational and Keynote Speaker, and a Performance Coach.  He works with athletes of all sporting codes, including golfers to "Unlimit Their Potential."  He joins #OntheMark to help you to think like a pro as he dives into elements of Kobe Bryant's "Mamba Mentality."

Seth maps out stories and anecdotes into a simple, applied performance playbook that translates cleanly to golf and high-pressure execution:

• The Kobe Archetype — A student of the game. Unconditional love from his family whether he scored he succeeded or failed, and how that freed Kob to fail and grow.
• Internal Drive — Bryant's “kill list” as personal motivation, and how the responsibility for obsession always lives with the athlete.
• The Mamba Mentality as a tool — How to create a performance persona. And the dsicipline of studying acting and characters to access different mind states on demand. 
• Seeking Separation and the Continuous Accumulation of Advantages — “Just keep getting better.” The compound effect of incremental gains over time. Kobe’s philosophy wasn't about a single "big break"; it was about the relentless accumulation of small advantages that eventually make him untouchable. 
• Deliberate Practice — A trait that Kobe and Tiger Woods shared. The art of living by “Don’t get Bored with the Bbasics.” 
• The Reset Weapon — Accepting the moment on its own terms to return to flow and presence.  Kobe's process for getting into The Flow State / The Zone.
• Prepare like a Scientist, Perform like an Artist — Separating analysis from execution. Playing with joy.
• Love and Greatness — At the highest level it is not about trophies, money, or fame.  It is about honing your craft and studying what you love.

This is Seth Pepper's second appearance on the #OntheMark podcast and just like the first time, he delves into his extensive experience and research to help you to perform at your best under pressure.

This podcast is also available as a vodcast on YouTube - to watch, search and subscribe to Mark Immelman.

Robert Rock is a 2x winner on The DP World Tour, a golf instructor, and one of the sweetest swingers of a golf club in the game.

He recently designed a golf-swing training aid called the TRS Slider, and he joins #OntheMark to talk about it and how it can help you improve various elements in your golf-swing:

• Garner the Correct Feel for an On-plane Swing
• Cure an Over the Top Move
• Improve Connection in the Trail Side
• Improve Trail Elbow aAction
• Improve Swing Path
• Improve Low Point Control
• Improve Clubface Release, and
• Direct a Proper Exit Path and Balanced Finish.

As a bonus, Robert also delves into various golfswing elements such as Swing Thoughts vs Swing Feels, Length of Backswing, Transition, Impact, Angle of Attack and Swing Path, as well as a centered tilted pivot as the hub of an on-plane, repeatable swing.

More about the TRS Slider - It is also used by professional golfers such as Open Champion, Cam Smith, PGA TOUR winner Thomas Detry and PGA TOUR winner Patton Kizzire.  This simple to use training aid will certainly highlight appropriate feels in the golf-swing and help you to hit the ball more squarely and powerfully.

Use code onthemark15 at golftrainingaids.com to get a discount on your purchase.

Learn from Rocky about how to make silky smooth, repetitive golf swings. 

Download and listen or watch on YouTube - search and subscribe to Mark Immelman.