POSTERIOR · ABOUT
About

One engineer.
One model.
One sport.

Posterior is an independent baseball market almanac, built and operated in eastern Ontario. The model is a hierarchical Bayesian system fit nightly, calibrated against recent resolved entries by three competing scalers (isotonic, Beta, BBQ), de-vigged against sharp market consensus, and surfaced as a daily slate of player-prop entries with transparent probability, edge, and grading context.

The work is published under the Posterior Research Desk, the editorial identity of ekkOS Technologies Inc.

The record is open. The full methodology is published, and the delayed resolved model ledger lives at /data — wins and losses both. No black box. No cherry-picking. No tipster culture. Live rows, pending rows, calibration dashboards, and full internals stay inside the subscriber almanac and API.

The legal entity is ekkOS Technologies Inc. Posterior is built as an editorial almanac: predictions, team desks, league tables, source-linked news, and a public record designed to be checked rather than trusted blindly. Drawn deliberately, restrained on purpose.

Posterior holds no affiliation with any sportsbook, exchange, or licensed betting operator. We do not run sportsbook affiliate links, white-labelled sportsbook comparisons, or paid sportsbook placements. Posterior Tickets is separate: when an authorized ticket provider or affiliate network permits it, an outbound ticket link may earn Posterior a commission after a provider-reported purchase. Posterior does not add a fee or increase the provider's price; the provider controls the final checkout total, availability, delivery, and refund terms. See the full affiliate disclosure. If gambling has stopped being entertaining for you, call 1-800-522-4700 (US) or 1-866-531-2600 (Canada).

§ On the name

pos·te·ri·or

/pɒˈstɪərɪə/ · adjective & noun
  1. 1Statistics. the distribution of a belief once the evidence is in — what Bayes' theorem turns a prior into. — this is the one we mean.
  2. 2Anatomy, informal. the hindquarters; the seat; the rump. — yes. we are aware.

“We named it for the math. The second reading is a happy accident we've chosen to wear with dignity — cheek included.”

The Posterior baseball mark leaning into the product name
Exhibit A · the unofficial mark
Contact
Published by
Posterior Research Desk
Entity
ekkOS Technologies Inc.
Founded
January 2026
Location
Eastern Ontario, Canada
Email
[email protected]
Methodology
/methodology
Accuracy
/mlb/accuracy