First-Round Leader Calculator

The intended use of this page

For this market, the calculator asks whether the entered data can combine a baseline probability with explicit adjustments and confidence weighting. As a practical check, the output describes an entered scenario and is not a guarantee.

First-Round Leader depends on the event scope represented by Baseline probability and Confidence weight.

Use the Top-10 Finish Probability only after deciding that top-10 finish probability belongs in the analysis.

Checks the arithmetic cannot perform

For this comparison, a material participant, format, or source change requires a new adjusted probability baseline.

In this model, field strength, course fit, tee time, weather, and starting status should match the tournament being priced.

For the selected event, a withdrawal or major weather split can change the field and invalidate an earlier estimate.

To compare make-the-cut probability separately, open the Make-the-Cut Probability after saving this baseline.

Reading the formula

Venue, surface, confidence, and form should move the baseline only when they add new information.

Double counting occurs when the rating already reflects the same factor.

For this market, supporting rows should reconcile with the same entries as the headline.

Building one compatible input set

• Baseline probability belongs to the same period as the other entries. It is starting probability before adjustments.
• Keep Primary adjustment on the event basis defined here: first percentage-point adjustment.
• Under the entered assumptions, use a current source for Secondary adjustment. Here it means second percentage-point adjustment.
• Confidence weight belongs to the same period as the other entries. It is share of the adjusted estimate to retain. The remainder moves toward 50%.

At this stage, a correct unit can still be incompatible when participant, period, or settlement basis differs.

How to read the result

The probability is conditional on ratings and adjustments.

Compare fair price with an executable quote for the same outcome.

For the saved case, a market move changes the comparison while model inputs may stay fixed.

Worked numbers

In the current scenario, use changed inputs to reproduce the calculation before entering current information.

Begin with Baseline probability at its loaded example value and keep the other displayed defaults.

Method: final probability = 50% + (baseline + adjustments − 50%) × confidence weight.

When using the result, preserve unrounded values until final display.

Change one assumption at a time

Within this calculation, create a neutral case before applying the full change to Confidence weight.

On this page, shrink a small-sample rating gap toward the broader baseline.

When using the result, a large fair-price swing signals sensitivity to scale or confidence.

Limits of the estimate

Adjustments are percentage points, not multiplicative percentages.

In the current scenario, review dead-heat deductions, place terms, cut rules, ties, and whether the wager covers a round or tournament.

For the selected event, the formula cannot confirm that a matching market remains open for the intended stake.

Preserve the baseline

In this model, preserve the first answer when Confidence weight changes.

For this comparison, start a new case when period, participant, settlement rule, or source definition changes.

As a practical check, state what changed and why in the next calculation.

Common interpretation questions