FA-84133 / Sports scoring and tiebreakers / Member archive

Pitcher with no outs crashes the ERA · case 03

A reliever who faced batters without recording an out raises a division error or shows 0.00.

Member previewVariant 3 · 3 implementations · 9 checks per implementation

Case contract

Pitching line aggregation. outings rows are [innings_pitched, earned_runs] where innings pitched use baseball notation "6.2" = 6 innings and 2 outs (the digit after the point is 0-2; otherwise return "invalid ip <text>"). Sum outs exactly. ERA = innings_per_game * earned runs / innings, rounded half up to two decimals. Return [total innings "I.O", ERA string]; with zero outs ERA is "INF" if any earned runs else "0.00".

Why this case matters

Box scores and stat pages aggregate outs across appearances; thirds of an inning are notorious.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
boundary no outs with runs	`"raised ZeroDivisionError"`	`["0.0", "INF"]`	Failed

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