Definition: The total number of strokes played on a course, without taking handicap strokes into account.

How it's calculated: Add up all the strokes played on each hole.

Why it's useful: It's the basis for analyzing your performance and measuring your overall improvement.

Reference: A 25-index player usually shoots a gross score between 90 and 105.

Definition: A scoring system where points are awarded based on your score relative to the par of each hole.

How it's calculated: Each hole earns points based on the number of strokes played compared with par, adjusted with the strokes you receive.

Why it's useful: It encourages strategic play by limiting the impact of badly played holes.

Reference: A 25-index player scores around 30-36 points over 18 holes.

Definition: The difference between your gross score and the course's total par.

How it's calculated: Gross score - Total par.

Why it's useful: It quickly shows whether you're playing above or below the expected level.

Example: A gross score of 95 on a par-72 course gives a score relative to par of +23.

Reference: +18 to +30 for a 25 index.

Definition: A hole-by-hole breakdown of your results (pars, bogeys, double bogeys, etc.).

How it's calculated: Each hole is classified by your score relative to par.

Why it's useful: It reveals trends and weak spots on the course.

Example: If 40% of your holes are bogeys, that shows consistency with room for improvement.

Reference: Typical distribution for a 25 index: 20% pars, 50% bogeys, 30% doubles or worse.

Definition: Hitting the fairway with your first shot on a par 4 or par 5.

How it's calculated: Number of fairways hit ÷ Number of tee shots on holes with a fairway.

Why it's useful: It assesses the accuracy of your tee shots.

Example: If you hit 6 fairways out of 14, your percentage is 43%.

Reference: Between 30% and 50% for a 25 index.

Definition: How your tee shots are spread (left, center, right).

How it's calculated: Percentage of shots in each zone.

Why it's useful: It reveals trends so you can adjust your strategy.

Definition: Rate of fairways hit with each club used off the tee.

How it's calculated: Number of fairways hit ÷ Total tee shots with that club.

Why it's useful: It shows your most reliable club.

Example: 75% with a hybrid versus 40% with the driver can shape your strategy.

Reference: 40%-50% with the driver for a 25 index.

Definition: Reaching the green in the regulation number of strokes, leaving a putt for birdie.

How it's calculated: Number of greens hit in regulation ÷ Total number of holes played.

Why it's useful: It assesses how efficiently you reach the green.

Example: 6 greens hit out of 18 = 33%.

Reference: 20% to 30% for a 25 index.

Definition: Rate of successful approach shots to the green with each club.

How it's calculated: Number of greens hit ÷ Total approach shots with that club.

Why it's useful: It shows your best-performing clubs.

Example: 60% with a 7-iron versus 40% with a 5-iron can influence your choices.

Reference: 40%-50% with mid irons for a 25 index.

Definition: Total number of shots played around the green.

How it's calculated: Counts every shot played in an area close to the green.

Why it's useful: It assesses how quickly you get close to the hole.

Example: A high number points to missed approach shots to the green.

Reference: Around 6-10 for a 25 index.

Definition: Number of approaches finished with a single putt.

How it's calculated: Approaches with 1 putt ÷ Total approaches.

Why it's useful: It measures how effective your short game is.

Example: 5 approaches out of 10 finished with one putt = 50%.

Reference: 30%-40% for a 25 index.

Definition: Average distance between the ball and the hole after an approach.

How it's calculated: Average of the distances left after all approaches.

Why it's useful: It assesses the accuracy of your shots around the green.

Example: An average distance of 2.5 m shows good accuracy.

Reference: Around 3-4 m for a 25 index.

Definition: Total number of putts over 18 holes.

How it's calculated: Add up all the putts.

Why it's useful: It gives you an overall view of your putting.

Example: 36 putts over 18 holes is a decent performance.

Reference: 34-38 putts for a 25 index.

Definition: Total distance of the putts you holed.

How it's calculated: Add up the distances of the putts holed on a round.

Why it's useful: It measures the overall quality of your putting.

Example: A total of 25 m holed over 18 holes shows good potential.

Reference: 23 - 30 m for a 25 index.

Definition: Average number of putts per hole.

How it's calculated: Total number of putts ÷ Number of holes played.

Why it's useful: It assesses your overall putting.

Example: 2.0 putts per hole is a good score.

Reference: 1.9 to 2.1 putts for a 25 index.

Definition: Success rate of your putts by distance

How it's calculated: Putts holed ÷ Total putts attempted from a given distance.

Why it's useful: It shows your strengths and weaknesses.

Example: 50% success from 3 m shows good mid-range putting.

Reference: 30%-50% from 3 m for a 25 index.

Definition: Total penalty strokes picked up on a round.

How it's calculated: Add up all the penalties.

Why it's useful: It assesses the impact of mistakes on your score.

Example: 4 penalties over 18 holes show costly mistakes.

Reference: 2-6 penalties for a 25 index.

Definition: Penalties sorted by type (lost ball, out of bounds, water hazards).

How it's calculated: Counted by category.

Why it's useful: It reveals the risky areas in your game.

Example: 3 water penalties in one round show a lack of accuracy.

Reference: 1-3 for a 25 index.