FA-84728 / Betting odds conversion / Member archive

Dead-heat net pool not split between winners · case 03

Both dead-heated runners are paid from the full net pool.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

Pari-mutuel win dividend per unit stake. The net pool is pool * (100 - takeout_pct) / 100; with a dead heat it is split equally among the winning runners. Each runner's dividend is its share divided by the stakes on it, broken down to the 10-cent step below (breakage), with a minimum of 1.10. A winner with no stakes gets None. Return dividends as "D.D0" strings in winners order.

Why this case matters

Tote operators compute dividends with takeout, breakage and minimum-dividend rules.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
boundary dead heat split	`["8.00", "2.00"]`	`["4.00", "1.10"]`	Failed

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