Horsham enter as clear favourites at 52.1% to Walton & Hersham's 26.7% (draw 21.2%), with the market's away lambda of 2.199 outstripping the hosts' 1.551 inside an expected-goals total of 3.75. The most consistent signal in the data sits on the goals axis rather than the result market: over 2.5 is priced at 72.3%, both teams to score at 70.5%, and the model's clearest divergence from market pricing is Over 3 goals, where a 65.1% model probability against a 55.9% market-implied probability (price 1.79) produces the session's largest edge at 9.2%.
The handicap picture and the goals picture tell the same story from different angles. A 0.75 Asian line in Horsham's favour, paired with an away lambda nearly 0.65 goals above the home side's, suggests the market sees Horsham as the stronger attacking unit even away from home — consistent with a lower-tier home side (Walton & Hersham) that the pricing expects to concede at a similar clip to what it can produce itself, hence a both-teams-to-score probability of 70.5% and a scoreline distribution that spreads across mutual-scoring outcomes (1-2, 1-1, 2-2, 1-3 make up the top four rather than one side shutting the other out. Against that backdrop, the model's edge is not scattered randomly across the market — it clusters specifically on the Over side of the total-goals line, and it persists across a run of alternate lines (3, 3.25, 3.5, 3.75, 4, 4.25 all showing positive Over edge), which reads as the model's combined-lambda goal expectation sitting structurally above where these three bookmakers have set their totals, rather than a one-off mispriced quote. That said, this is a divergence from current pricing, not a guarantee — the book carries an 11.2% margin on only 3 quoting bookmakers, a thin sample that limits how much confidence should be placed in any single price, even one with a shin-adjusted overround (5.7%) that looks reasonably balanced. Zooming out to the full edge set is a useful check against reading too much into the Over cluster: of 99 quotes examined, only 27 carry positive edge against 72 negative, with a mean edge of -4.2% and a range from -17.7% up to the 9.2% high. Because paired sides of the same handicap or total are vig-loaded to sum negative, the Over-goals edge is a local pocket inside a market that is, on balance, priced against the bettor once the bookmaker's cut is accounted for — not a sign that value is available throughout the card. Two gaps also limit how much weight this analysis can carry. League standings for both sides are incomplete, so recent form and table context could not be verified and are not reflected in the model's priors beyond the raw lambdas. Neither club has confirmed a matchday squad yet, so any rotation or missing-player effect — plausible in an FA Cup tie involving non-league opposition — sits entirely outside what this report has priced in.
