Returns the line movement for one book, market and side of a live or recent event, from the opening line to now. The /api/v1/history endpoints cover archived games.

Returns the line movement for one book, market and side of a live or recent event, from the opening line to now. The /api/v1/history endpoints cover archived games.

With neither startTime nor hours the window starts at the opening line for that book, market and side.

Snapshots whose price could not be stored accurately are excluded; the response says so rather than returning a fabricated window.

pointValue is point as a number (null when there is no point); point itself keeps the type it always had.

Pass the event's eventId field, the {sport}:{away}@{home}-{YYYYMMDD} form. The numeric id field beside it is the sportsbook's own and returns 400 here rather than an empty result. The date in eventId is the UTC start date, except for MLB games starting from 2026-10-11T10:00Z, which carry the US Eastern date; earlier MLB games keep the UTC date. Before that change, an MLB game starting at 8 PM ET or later and the next day's game between the same teams could share one eventId. NBA and NHL stay UTC-dated. NBA has about one pair of games a season sharing an eventId. NHL has about one pair a season of the same teams on one date, home and away swapped: two eventIds, but the /api/v1/history endpoints match both orderings, so each id returns both games' rows.