J1 2026-27 -- round of 2026-10-17

Match probabilities for Japan's J1 League. 10 fixtures, fixed before kickoff. The market is measurably better than this model — a disagreement below is a question, not an answer. Full caveat & numbers.

Calibrated model probabilities. Kickoff times are UTC, 2026. No market odds are shown here — see Methodology for why.
Kickoff Home Away P(H) P(D) P(A) Result
Oct 17 04:00 Shimizu S-Pulse Gamba Osaka 39.7% 27.2% 33.0% 2–2 (D) · provisional
Oct 17 05:00 Verdy FC Tokyo 26.8% 29.4% 43.8% 0–4 (A) · provisional
Oct 17 05:00 Sanfrecce Hiroshima Kyoto 56.5% 23.5% 20.1% 3–0 (H) · provisional
Oct 17 05:00 Chiba Yokohama F. Marinos 20.0% 21.3% 58.7% 0–0 (D) · provisional
Oct 17 06:00 Cerezo Osaka Kawasaki Frontale 36.5% 22.7% 40.7% 2–4 (A) · provisional
Oct 17 06:00 Kashima Antlers V-Varen Nagasaki 67.4% 18.2% 14.4% 2–0 (H) · provisional
Oct 17 07:00 Mito Urawa Reds 38.0% 25.1% 36.8% 0–1 (A) · provisional
Oct 17 10:00 Kashiwa Reysol Nagoya Grampus 55.1% 23.2% 21.8% 1–3 (A) · provisional
Oct 18 04:55 Okayama Vissel Kobe 27.2% 28.2% 44.6% 0–3 (A) · provisional
Oct 18 07:00 Machida Avispa Fukuoka 55.2% 25.6% 19.2% 3–0 (H) · provisional

Round result

10 of 10 fixtures resolved. Mean RPS (calibrated model): 0.1979. See Track Record for the cumulative, non-backtest picture.

Over 3,882 backtested J1 matches (2014–2025-26), the closing betting market scored 0.0044 RPS points better than this model on average (95% CI [0.0026, 0.0060]) — see Methodology. This model has no information the market lacks: it does not see injuries, lineups, suspensions or travel. The bold figure in each row is only the most likely of three outcomes, not advice — in most football matches the most likely single outcome still loses more often than it wins.

Metadata & verification

Published (UTC)
2026-10-15 07:58 UTC
Trained as of (UTC)
2026-10-15 07:57 UTC
Model version
footy-ev-phase2-dc-tb-v1
params_hash
ea317b1dbde414553b28ff026b02ecdc2ba3b088e5d242b6cff416d721ed3f7f
File SHA-256
6295366133996144038dbb6450e8e4c39b52ffe142acac29d8e36647402bb78d
Market snapshot SHA-256
b682e6bdafd76d41a0bb5eefdd3855ef576299d5cb555b8c6a0d37fe052bb800
Training window
1842 matches, 29 teams, since 2021
Publish gate
PASS

How to verify

This file is committed as predictions/j1_2026_2026-10-17.json in the project's git repository, with the SHA-256 shown above. On its own, a git commit timestamp is not strong third-party evidence that a prediction existed before kickoff — the author can set it to any date. Independent timestamping (OpenTimestamps), Wayback Machine archiving and a GitHub Actions server-time witness are part of this project's published plan for closing that gap (design document, section 3) and are not yet wired into this build. Until they are, verify what you can today: recompute the SHA-256 of the committed file yourself and confirm it matches the value above, and read the raw JSON — nothing on this page is derived from anything else.