Training Example: Sergio Coyle Diez – PGA Golf Coach – Review the Data, Give Your Score & Compare to the Real AI Evaluation

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[H2] Sergio Coyle Diez

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Recognised as one of the leading PGA coaches in Ireland and Spain, Sergio helps golfers at every level improve with purpose. From beginners building solid fundamentals to experienced players chasing the next level, his coaching gives players a clear path forward.
His approach is practical, modern, and built around solutions that work. Sergio has helped countless golfers make real progress, and the results show what happens when expert coaching meets a strong player-coach partnership.
Sergio stays at the front of the profession by studying the latest coaching methods, technology, and performance tools. He travels internationally to keep learning and to bring that knowledge back to his players. His work in golf biomechanics, and his ongoing study of human movement, allow him to coach with precision and clarity.
He has worked as a consultant with national federations, contributing to team panels and performance programmes. He has also supported professional players and their coaches, offering specialist input in biomechanics to refine performance at the highest level.
Alongside his work with amateur golfers and developing players, Sergio has also consulted with PGA and European Major champions to help fine-tune elite performance.
This is not about quick fixes. It is about building a golf game that holds up under pressure and lasts over time.
Work with Sergio to improve your swing, build confidence, and perform better on and off the course.
Ready to take your golf to the next level?
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[IMG: What Do Golfers Really Want From a Lesson?]

[H2] What Do Golfers Really Want From a Lesson?

Mar 24, 2026yes, It’s a question that comes up a lot: what do golfers really want from a lesson? From my experience over the past...

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[H2] Training aid and what I’m thinking right now

Jan 25, 2026Over the last couple of weeks, a lot of coaches have asked me what training aid I actually use in my coaching. The...

[IMG: Center strike versus ball flight: which really deserves priority?]

[H2] Center strike versus ball flight: which really deserves priority?

Jan 25, 2026Center strike versus ball flight comes up a lot in coaching sessions. Recently, more players have been asking to...

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[H3] We provide tailored solutions to help you unlock your full potential. Every golfer’s journey is unique, and our sessions are designed to address your specific challenges by focusing on:

[H4] WHY

Understanding your current gameplay is essential. We begin by listening to your experiences, frustrations, and aspirations to pinpoint your exact standing. This process includes a skill assessment, enabling us to gain deeper insights into your gameplay challenges and strengths. By comprehensively evaluating your situation, we can tailor our approach to help you improve effectively.

[H4] WHAT

We delve into the root causes of your challenges, examining elements such as decision-making, physical movement, mindset, and strategy. The Bull 3D system, a highly precise 6-sensor 3D body tracking technology, quantifies how you produce your swing pattern, providing detailed insights into your mechanics. Additionally, our 3D Force Plates reveal critical information about how you interact with the ground and the forces you generate, which are essential for creating effective movement in your golf swing. Finally, Trackman allows us to analyze how you deliver the club and understand its impact on ball flight, enabling us to refine your technique for improved performance.

[H4] HOW

We design clear, actionable solutions tailored to your unique needs, ensuring that every step you take leads to improvement and lasting results. By gaining a deep understanding of how the club and ball interact, we can uncover the underlying reasons for their behaviors. This investigation allows us to identify specific areas for development and craft personalized strategies that facilitate your growth.

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We highly recommend our golf program, crafted to provide you with the essential tools and tailored solutions that will elevate your performance and help you play your best on the course.
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We pride ourselves on our dedication to excellence and exceptional performance. Here’s a snapshot of our achievements that reflect our commitment and success:
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[H4] PLAYERS

Sergio has coached players from around the world at his studio in Dublin, Ireland, and has also travelled internationally to work with players at different levels, from beginners to advanced competitors.
Some players continue to train with him, while others have moved on to pursue their own paths. Sergio is grateful for every opportunity and still works with a number of them today.
His door has always been open, and he believes that building long-term relationships, supporting players beyond sessions, and staying available when they need guidance is what makes a good coach.
If you’re looking to improve your game or take the next step, you can get in touch to start working with Sergio.

[H2] Player who are working with Sergio

Samuel Espinosa Trueba

Luke Furlong

[H2] Player who worked with Sergio

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William Walshe

Finn Jolly

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[H4] Written by Sergio Coyle Diez

[H1] What Do Golfers Really Want From a Lesson?

yes, It’s a question that comes up a lot: what do golfers really want from a lesson?
From my experience over the past year, only about 20% of players actually understand this when they walk in.
Most say they want to:
Stop slicing
Hit it longer
Change their swing
All fair goals. But here’s the issue:Those don’t automatically lower your score unless you approach them properly.
[H2] The Real Goal: Lower Scores
When you strip it back, most golfers want one thing:
To shoot lower scores.
The problem is how they try to get there.
They chase distance instead of control
They chase swing changes instead of outcomes
They focus on mechanics instead of results
Those things matter—but only if they connect to scoring.
[H2] A Real Example From Spain
Last week in Spain on my annual coaching trip, one player wanted to hit his driver longer.
Good goal—but the real issue was:
He wasn’t finding the centre of the clubface
That reduced ball speed
Which reduced distance
So we changed the focus.
[H3] Step 1: Fix the Strike First
We worked on a simple drill:
Stop the out-to-in (over-the-top) path
Improve club delivery
No balls at first—just movement
This forced his body to learn a better pattern.
[H3] Step 2: Commit to the Process
He stuck to it. By the end of the session:
He started finding the centre of the face
Ball striking improved immediately
[H3] Step 3: Change the On-Course Goal
We didn’t chase distance anymore.
We set one goal:
Hit as many fairways as possible
Results:
Day 1: solid progress
Day 2: 14 fairways hit
That changed everything.
More balls in play
Easier second shots
Lower scores
He still wanted distance—but now he saw what actually mattered.
[H2] The Hidden Problem: Expectations
A big issue isn’t technique—it’s expectations.
Most golfers:
Expect to play “perfect” golf
Get frustrated when they don’t
Let bad shots affect the rest of the round
But golf doesn’t work like that.
[H2] A Different Way to Think
Here’s something I use in my own game:
On the first tee, I set expectations like this:
I allow myself 3 poor drives
I allow 2 bad iron strikes
That changes everything.
I expect mistakes
I don’t react emotionally when they happen
I stay focused on scoring
After the round:
If I exceed those numbers → I review the swing
If not → I move on
[H2] You Can Still Score Without Your Best Game
One of my biggest lessons came when I shot -5 with only 4 greens in regulation.
I wasn’t hitting it well.
But I:
Managed the course
Stayed composed
Focused on scoring, not swing
That’s when it clicked:
You don’t need your best swing to shoot a good score.
[H2] What You Should Want From a Lesson
If you’re asking what you want from a lesson, start here:
[H3] 1. A Clear Scoring Goal
Not “fix my swing”But:
Hit more fairways
Avoid big numbers
Improve strike
[H3] 2. A Simple Process
One focus at a time
Clear drills
Repeatable habits
[H3] 3. Better Expectations
Accept bad shots
Stay level emotionally
Focus on the next shot
[H2] Final Thought
If you can take the game you already have and find ways to score better with it, that’s a win.
Lessons shouldn’t just change how your swing looks.
They should change:
How you think
How you manage the course
How you respond under pressure
That’s where real improvement happens.when feedback is built around individual ranges, not generic numbers.

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[H4] Written by Sergio Coyle Diez

[H1] Training aid and what I’m thinking right now

Over the last couple of weeks, a lot of coaches have asked me what training aid I actually use in my coaching. The short answer is simple: bands. Most of my players already know that.
The obvious reason is cost.
Most training aids cost over €100. Many players can’t justify that, especially if the aid only gets used for a few weeks while working on one specific feel. Bands are cheap, flexible, and can be used in lots of ways.
There’s also technology-based training. Many players already have access to it. The issue isn’t availability, it’s overload. When players read blogs or watch content around these systems, they often get confused by the amount of data presented. They’re told they need to be in certain positions or within specific numbers because that’s how good players move. The problem is those ranges aren’t always relevant to the player in front of you. Instead of creating clarity, the data often creates noise.
That got me thinking more about feel versus real.
[H3] Feel versus real
Here’s a recent example.
A player came in with too much forward bend at setup. That pushed pressure into his toes and left him off balance. We worked on getting him closer to neutral. There was no training aid for this. He had to be aware of what he was doing and use his phone to record his setup.
He came back the following Friday and his posture had gone the other way. He was now too upright.
He went from one extreme to the other.
That’s feel versus real.
Another example:
A player swayed towards the target in the downswing
Contact suffered
We placed an alignment stick outside the lead hip
The task was to avoid touching it at impact
That feedback works, but it still relies on external reference. It also isn’t as easy to set up or repeat consistently as people think.
These sessions raised a bigger question.
[H3] What’s affordable and useful long term?
I started asking myself:
How do we give players feedback without overload?
How do we make it relevant to the individual?
How do we avoid buying separate tools for separate issues?
That’s what led me to the idea of building an app.
[H3] The app concept
The concept is simple.
Two sensors
One on the upper back
One on the pelvis
The app provides automatic audio feedback when the player moves outside predefined ranges.
Players can set ranges for and many more:
Forward bend
Side bend
Sway
Rotations
General pivot control movements
The target price is €100–€150, or €45 per month to rent.
[H3] Why this app is easier to use
This app is designed to work with a coach, while still giving you the option to train on your own.
It’s a biofeedback tool by design.
Most golfers don’t really know what they should be working on. They rely on quick tips or generic technology feedback, which often misses the real issue. A coach understands what you need based on experience and observation, not just numbers.
This is where the app becomes valuable.
You leave the lesson with a clear goal and a way to train it properly. The ranges are set during the session, and the feedback you get is directly linked to what you worked on with your coach.
There’s also a practical benefit:
Sensors sit under your clothing
No visible training aid on the range
Feedback goes straight to your phone
You can use headphones for audio feedback
You can practise without worrying about setup, attention, or guessing. You get immediate feedback and stay focused on the task set in the lesson.
[H3] Taking the feedback onto the course
The value of this app isn’t limited to the range. It also allows you to take the work onto the course.
For example, imagine you’re on a par 4 and your tendency is to sway away from the ball. That movement shifts low point and affects contact. With the app running, you can see if you’re actually applying the skill on the course, not just during practice.
You get instant feedback in a real playing environment. That’s where change really matters.
It closes the gap between practice and play, and shows you if the work you’ve done in lessons and on the range is holding up under pressure.
[H3] Why this works better than a single-purpose training aid
Most players don’t struggle with one isolated issue. They struggle with movement patterns, especially pivot control.
Take the player with too much forward bend:
We set posture ranges specific to that player
The app gives feedback the moment they leave that range
If they sway off the ball too much, they hear it.
If posture changes during slow practice swings, they hear it.
This is where feel versus real becomes clear.
What you feel is often not what you’re doing. Instant feedback closes that gap.
[H3] The real value
This type of training aid isn’t about feeding players more data. It’s about boundaries.
You know the range you need to stay within
You get feedback immediately when you leave it
You can train slowly and accurately
That’s far more effective than buying something for one issue, using it briefly, then moving on.
[H3] Final thought
This is a challenge a lot of coaches face. Players want feedback, but it has to be clear, relevant, and affordable.
Over the coming weeks, I’ll talk more about this idea. But the key question remains:
Does it bring value to the player?
For the coaches I’ve spoken to, the answer is yes, when feedback is built around individual ranges, not generic numbers.

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[H1] Center strike versus ball flight: which really deserves priority?

Center strike versus ball flight comes up a lot in coaching sessions. Recently, more players have been asking to improve their ball flight. They want shots that start on line, curve less, and repeat under pressure.
At the start of these sessions, I ask one simple question:
What has more priority, center strike or ball flight?
Most golfers answer ball flight. From a scoring point of view, that makes sense. But it’s only part of the picture if your goal is to lower your scores.
[H3] If you strike an iron off the toe or heel, but keep face-to-path the same, the ball can still fly fairly straight. Distance and height will change, but direction often survives. That’s why many golfers underestimate how inconsistent their strike really is.
With a driver, gear effect changes everything. Toe and heel strikes add curvature you didn’t plan. The face hasn’t changed, but the strike location has and the ball flight reacts immediately.
That’s the key point.
Strike location influences ball speed, launch, spin, and curvature. If strike moves around the face, those variables move too. You can’t stabilise ball flight when the strike point keeps changing.
This is why improving ball flight becomes guesswork without centred contact. You might fix one shot, but the next swing produces a different result for reasons you can’t see.
This is where most golfers struggle in lessons. They don’t want to prioritise strike, and that’s understandable. Ball flight feels more connected to scoring. But poor strike limits how much control you can actually develop.
Until centre strike improves, ball flight work has a ceiling. You can manage outcomes, but you can’t own them.
[H3] Most golfers aren’t striking the centre
I’ve also noticed that many golfers think they’re striking the centre of the face when they’re not.
Feel isn’t reliable. What feels like a centred strike is often heel-side or toe-side contact. Without feedback, most players guess and they usually guess wrong.
That’s why you need to check strike, not assume it.
Use face spray or impact tape
Look at strike patterns, not single shots
Judge contact before you judge ball flight
Until you know where you’re striking the face, working on ball flight is based on false information.
[H3] A simple way to expose the issue
One of the simplest drills I use is what I call shaft-parallel to shaft-parallel swings.
Short swings
Reduced speed
Full focus on centred contact
Most golfers find this very difficult.
That’s the test.
If you can’t find the centre of the face at slower speeds, how do you expect to do it at full speed?
[H3] The reality most golfers miss
Here’s the simple truth:
Center strike is always king
No consistent strike = limited ball flight control
Ball flight work without strike control has a low ceiling
Sometimes, improving centre strike means changing how you move in the swing. That can involve adjusting long-standing patterns. That’s normal. It’s also why avoiding strike work slows progress.
[H3] Final question
Ask yourself this:
If your centre strike is inconsistent, should you really be working on ball flight — or should you prioritise strike first?
No centre strike. No ball flight control.

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