Parful library
Handicaps and scoring, without the fog
The arithmetic behind every net score, written out with real numbers. What an index is, how it becomes strokes on your card, where the caps are and what Parful does at each step.
19 terms in this section.
From index to strokes on the card
The chain every net score runs through.
Course Handicap™
Parful runs thisA Course Handicap™ is your Handicap Index® translated to the tees you are playing today: index times the Slope Rating™ divided by 113, plus the difference between the Course Rating™ and par, rounded to a whole number. It is the number of strokes the course gives you before any format allowance.
Also called Course handicap calculation, Handicap for the course you are playing.
Read the rulesGross and net scores
Parful runs thisYour gross score is the strokes you actually took. Your net score is that number minus the handicap strokes you received. Gross decides who played best on the day; net decides who played best relative to their ability, which is the only way golfers of different standards can compete.
Also called Net score, Gross score, Net scoring.
Read the rulesHandicap Index®
Parful runs thisA Handicap Index® is a measure of your demonstrated ability, carried between courses. Under the World Handicap System™ it is the average of the best 8 Score Differentials™ in your most recent 20 rounds, and it means nothing until it is converted to a Course Handicap™ for the tees you are playing.
Also called Golf handicap, WHS index, Handicap number.
Read the rulesPlaying Handicap™
Parful runs thisA Playing Handicap™ is your Course Handicap™ after the format's allowance has been applied, rounded to a whole number. It is the last number in the chain and the one that actually puts strokes on your card. Four-ball at 85% turns a Course Handicap™ of 20 into 17 strokes.
Also called Handicap allowance, Strokes received, Competition handicap.
Read the rulesScore Differential™
Parful runs this, with a caveatA Score Differential™ measures one round against the difficulty of the tees played: 113 divided by the Slope Rating™, multiplied by your adjusted gross minus the Course Rating™. Your Handicap Index® is the average of the best 8 differentials in your last 20 rounds.
Also called Handicap differential, Round differential.
Read the rulesStroke index and stroke allocation
Parful runs thisThe stroke index ranks the eighteen holes from 1, the hardest, to 18, the easiest, and decides where your handicap strokes fall. A Playing Handicap™ of 12 gets one stroke on stroke index 1 through 12. Above 18 the allocation wraps: every hole takes one stroke before any hole takes a second.
Also called Stroke allocation, Handicap holes, Where my shots fall.
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Caps, tees and adjustments
The rules that change a number before it reaches the card.
Club maximum Course Handicap™
Parful runs thisA club can cap the Course Handicap™ any player receives in its competitions. The cap is applied to the Course Handicap™ before the format allowance, which is the only order in which it actually binds. Plus handicaps are never capped.
Also called Handicap limit, Maximum handicap, Handicap cap.
Read the rulesMixed tees and the par adjustment
Parful runs thisWhen a field plays from different tees, the Course Handicap™ already accounts for most of the difference because it contains the Course Rating™. What it does not carry is a difference in par between the tees, so an adjustment adds the rounded par difference and nothing else.
Also called Playing different tees, Rule 6.2b, Multi-tee competition.
Read the rulesNet double bogey, maximum score and pickups
Parful runs thisNet double bogey is the most any hole can count for handicap: par, plus two, plus the strokes you receive there. It is why you can pick up on a disaster hole without wrecking your card, and it is one of three cap rules a Parful outing can run.
Also called Maximum hole score, Picking up, Hole cap.
Read the rulesNine-hole rounds
Parful runs this, with a caveatA nine-hole round takes half the strokes: a Playing Handicap™ of 12 receives one stroke on the six lowest stroke indexes of that nine, wrapping the same way an eighteen-hole allocation does. Parful scores nine holes completely, and does not yet post them for handicap.
Also called Nine hole golf, 9 hole competition, Twilight round.
Read the rulesOwn tee or committee-designated tee
Parful runs thisIn most formats every golfer plays their own tee and their handicap is computed for it. In formats where a side plays one ball there is no such thing as an individual tee, so the committee designates one for the side and every handicap in it is computed from that tee.
Also called Which tee to play, Tee selection, Designated tee.
Read the rulesPlus handicaps
Parful runs this, with a caveatA plus handicap belongs to a golfer who is better than scratch. It is written with a plus sign, as in +2.4, and it works in reverse: instead of receiving strokes the player gives them back, adding a stroke to their score on the hardest holes first.
Also called Plus handicap golfer, Scratch and better, Negative handicap.
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Where a handicap comes from
Linked, manual, estimated, frozen or adjusted.
Handicap freeze
Parful runs thisA handicap freeze is a snapshot of every entrant's Handicap Index® taken at a moment the committee chooses, after which the frozen values are used for the whole competition regardless of how the live indexes move. It keeps the strokes between two players fixed from the first match to the final.
Also called Frozen handicaps, Freezing handicaps for a competition, Handicap lock for a knockout.
Read the rulesPer-outing handicap adjustment
Parful runs thisA per-outing handicap adjustment is an organizer's overlay on one player's Handicap Index® for one outing or event: a percentage (for example 90%) or a points offset (for example minus 2). It is applied before the Course Handicap™ is worked out, held between +10 and 54, recorded with a reason, and never changes the player's source index.
Also called Handicap adjustment for one event, Winner's allowance, Docking a handicap.
Read the rulesTeam handicaps
Parful runs thisA team handicap is the single number a side plays off when it keeps one card. It is built from the players' Course Handicaps in one of three ways: a weighted split of the players in handicap order (scramble, greensomes, chapman), a percentage of the combined total (foursomes), or a percentage of each player separately (four-ball).
Also called How a team handicap is calculated, Combined handicap for pairs, Side handicap.
Read the rulesWhere a handicap comes from
Parful runs thisA member's Handicap Index® on a Parful club roster is linked, meaning a handicap ID is on file and network sync can refresh it when the club turns sync on, or manual, meaning it is whatever the club last entered. Every change records its source (sync, CSV import, manual edit or wizard), a revision and an audit entry.
Also called Handicap sources, Handicap provenance, Linked and manual handicaps.
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Other systems you will hear about
Guest-day methods and older rules, explained but not run.
Adjusted gross score
Rules and explanation onlyAn adjusted gross score is the score used for handicap purposes after every hole has been capped at net double bogey and any unplayed or unfinished holes have been given their handicap value. It is the number that goes into the Score Differential™, and it can be lower than the gross on the card but never higher.
Also called Adjusted gross, AGS golf, Score posted for handicap.
Read the rulesCallaway, Peoria and System 36
Rules and explanation onlyCallaway, Peoria and System 36 are one-day handicap systems for players with no Handicap Index®, each worked out from the round just played. Callaway deducts the worst holes by a table, Peoria triples six secret holes and takes 80% of the excess over par, and System 36 subtracts points earned from 36.
Also called Callaway system, Callaway handicap, Peoria system.
Read the rulesEquitable Stroke Control
Rules and explanation onlyEquitable Stroke Control was the USGA® rule, in force until 2020, that capped the score a player could post on any hole for handicap at a limit set by their Course Handicap™ band, from double bogey for the lowest handicaps up to 10 for the highest. The World Handicap System™ replaced it with net double bogey.
Also called ESC, ESC golf, Equitable Stroke Control table.
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Trademarks
GHIN® and USGA® are registered marks of the United States Golf Association.
World Handicap System™, WHS™, Handicap Index®, Score Differential™, Low Handicap Index™, Course Handicap™, Playing Handicap™, Course Rating™, Bogey Rating™ and Slope Rating™ are trademarks and service marks owned or licensed by the United States Golf Association and The R&A.
Ryder Cup® is a trademark of PGA of America and Ryder Cup Europe. Pinehurst® is a trademark of Pinehurst, LLC.
Parful is not affiliated with, sponsored by or endorsed by any of these organizations. Game names such as Stableford, Nassau, Wolf, Vegas and Skins are used descriptively.