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Periods define the time segment of a game that a market applies to. Each period has a numeric period_id. Prematch and live periods use separate ID ranges.

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Prematch Periods

Tennis uses period_id=0 for prematch full-match markets. Set-specific prematch markets reuse period IDs 3 and 4 for Set 1 and Set 2.

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Live / In-Play Periods

Tennis uses period_id=7 for live full-match markets. Live set-specific markets use period_id=15 for Set 1 and period_id=16 for Set 2.

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V1 Best-Line Period Names

In the V1 best-line endpoint, periods are referenced by string names rather than numeric IDs. The mapping is as follows: