Glossary
Accumulator (acca)
An accumulator, or acca, combines several selections into one bet where all must win for it to pay out, multiplying the odds together.
An accumulator rolls multiple selections into a single bet: the combined price is each selection's odds multiplied together, so the potential return is large but every leg must win. Accas drive a huge share of football betting and many bookmaker promotions.
For a data product, acca-related concessions (acca insurance, acca boosts) are a frequent matched-betting and value surface. The feed normalises the underlying single-market prices the acca is built from.
OddsRelay delivers this as part of one already-matched feed. See live coverage on the coverage dashboard.