Predictions / Football / Portugal. Primeira Liga / Nacional vs Guimaraes

Prediction Audit: Nacional vs Guimaraes Prediction, Odds & AI Betting Tips

Nacional Nacional
May 16, 2026 - 17:00
2 1.46
0 1.28
xG Accuracy: 61%
Guimaraes Guimaraes

AI correctly predicted the Nacional win.

The match finished 2–0, validating the model's directional assessment.

Tracked markets vs full-time result

Prediction grade F

Each row compares the pre-match model lean to the full-time result.

  • Market Prediction Result Outcome
  • Over / Under 2.5 Over 2.5 Under 2.5 (2 goals) ✖ Incorrect
  • Both Teams To Score BTTS Yes No ✖ Incorrect
  • 1X2 Nacional Nacional ✔ Correct
  • Correct Score Insights 1-1, 1-0, 2-1, 0-1, 1-2 2-0 ✖ Incorrect

Model vs Closing Market

Moderate Disagreement

The closing market prices Nacional higher than the statistical model.

Largest probability gap: Nacional -7.1 pp

Outcome Model Closing Market Difference Signal
Nacional 39.8% 46.9% -7.1 pp Market Higher
Draw 28.6% 28.5% +0.2 pp Aligned
Guimaraes 31.6% 24.6% +7.0 pp Model Higher

The closing market estimates Nacional's win probability at 46.9%, compared with the model's estimate of 39.8%, a difference of 7.1 percentage points. This highlights a disagreement between the model and market consensus, without indicating which view is ultimately correct.

Model probabilities are generated from the statistical xG model using a Poisson distribution. Closing market probabilities are derived from consensus closing 1X2 odds after margin removal. Values represent implied probabilities rather than betting recommendations. Closing snapshot: PRE1.

After full time, the model's directional lean matched the result (Nacional win 2–0).

Market Assessment

The market and model broadly agree on Nacional. The remaining divergence may reflect differences in team-strength assumptions rather than a directional disagreement.

  • Monitor line movement before kickoff — not a betting recommendation.

Post Match Insights

What failed

  • Both Teams To Score: model leaned BTTS Yes; match finished BTTS No
  • Over / Under 2.5: model leaned Over 2.5; match finished Under 2.5 (2 goals)

Market lesson

Large model–market gaps do not automatically mean the market is right. Here the closing market priced Nacional higher (46.9% vs model 39.8%, 7.1 pp), but the model's lean was validated (Nacional win 2–0).

Premium betting site stake: New users can use the promo code FHn2uDc1 to receive $100 cash.

Prediction Timeline

How this prediction moved from forecast to full-time review.

  1. May 17, 2026 · 15:59 UTC Forecast generated
    • Model 1X2 · Nacional 39.8% · Draw 28.6% · Guimaraes 31.5%
    • xG · Nacional 1.46 — Guimaraes 1.28
  2. May 17, 2026 · 15:29 UTC Opening odds snapshot PRE30
    • 1X2 odds · Nacional 2.05 · Draw 3.38 · Guimaraes 3.91
    • Implied 1X2 · Nacional 46.9% · Draw 28.5% · Guimaraes 24.6%
    • Bookmaker · Pinnacle
  3. May 17, 2026 · 15:59 UTC Closing snapshot recorded PRE1
    • 1X2 odds · Nacional 2.05 · Draw 3.38 · Guimaraes 3.91
    • Implied 1X2 · Nacional 46.9% · Draw 28.5% · Guimaraes 24.6%
    • Bookmaker · Pinnacle
  4. May 16, 2026 · 17:00 UTC Kickoff
  5. FT Full-time result Nacional win · 2–0
  6. FT Prediction validated Directional lean matched full-time result
  7. Archived Prediction review

Historical Snapshot

Frozen at kickoff — the model output as it stood before the match started.

Historical verdict: Observe
Historical Decision No Primary Bet
Outcome Validated
Pre-match metrics (historical context)
Prediction Reliability 75/100 · High
  • Validation: Pass
Evidence ★★★★★
  • No strong statistical edge
  • Direction agrees with model lean
  • Validation passed
Pricing proximity (inverse gap) 64/100
Betting Confidence 78/100

Validation Report

Immutable Snapshot

Prediction Time: Jul 23, 2026 · 19:26 UTC Snapshot ID: dp-1491239

Closing Odds 2.05
AI Fair Odds —
CLV Pending
Final Result Nacional win · Nacional 2–0 Guimaraes
Prediction ✔ Correct
Decision Grade F

Model Performance

This prediction contributes to:

  • Primary Bets ROI (180d): -100.0%

Review FAQ

How accurate was the prediction?
This page grades directional markets (1X2, Over/Under 2.5, BTTS) against the full-time result. The prediction grade reflects how many of those tracked markets matched reality.
What does xG Accuracy measure?
xG Accuracy compares the model's pre-match expected-goals profile to the actual scoreline — not whether every market hit. A strong directional review can coexist with a moderate xG accuracy score.
Why wasn't the exact score predicted?
Correct-score outcomes are low-probability tails even when the model reads the match profile well. We highlight top score bins for context; missing the exact line does not invalidate a directional review.
Does this improve the AI record?
Each finished match is logged in our validation pipeline. Aggregated hit rates and CLV studies are published separately — this page is the per-match audit trail.

Predictions are for informational purposes only. Always gamble responsibly and within your limits. Past performance does not guarantee future results.

AI match briefing

AI Match Summary

Below is a compact, numbers-first snapshot aligned with the same engine as the cards above.

  • League: Primeira Liga
  • Fixture: Nacional vs Guimaraes
  • Kickoff: 2026-05-17 16:00:00
  • 1X2 (model): Home 39.8% · Draw 28.6% · Away 31.5%
  • xG (showing): Nacional 1.46 — Guimaraes 1.28 (total xG ≈ 2.74)
  • Value headline: At least one tracked line reaches the headline EV threshold — align with the hero / Primary card if shown.
  • Structural leans (not bets): Structural lean (model): O/U 2.5 Over 2.5 (Under 2.5 48.4% · Over 2.5 51.6%); BTTS Yes (Yes 57.0% · No 43.0%) Value lean (pricing): O/U 2.5 Over 2.5; BTTS Yes
  • BTTS (model): Yes 57.0% · No 43.0%
  • Correct score (top bin): 1-1 (12.1%)

The decision block shows no default Primary: Primary needs consensus EV ≥ +5.0% plus strength/reliability/calibration gates. A separate Lean/tracked gate is +2.0% (selective only). Lean labels are directional only — not bankroll-sized recommendations.

Most likely correct score stays a low-probability tail: use it for context, not as a must-bet story.

Historical Recommendation

Historical Decision: No Primary Bet

Outcome: Validated — Pre-match lean validated against the full-time result.

Risk Factors Considered Before Kickoff

  • Price movement: implied probabilities and EV move with odds.
  • Sample / data gaps: low-information leagues widen forecast bands.
  • In-play state: goals and red cards are not modelled here.
  • Scoreline variance: the most likely scoreline is still usually a low absolute probability outcome (often well below 20%).

Last Updated

October 03, 2026 (UTC)

Related Predictions

See Upcoming Primeira Liga Matches Track Nacional Next Match Prediction Track Guimaraes Next Match Prediction View Today's Football Predictions

Get Premium Predictions for Nacional & Guimaraes!

Unlock in-depth analysis, exclusive betting tips, and match forecasts with our premium subscription service.

Subscribe Now
Back to Predictions
Primeira Liga Primeira Liga — Standings
# TEAM MP W D L PTS
1 FC Porto 34 28 4 2 88
2 Sporting CP 34 25 7 2 82
3 Benfica 34 23 11 0 80
4 SC Braga 34 16 11 7 59
5 Famalicao 34 15 11 8 56
6 GIL Vicente 34 13 11 10 50
7 Moreirense 34 12 7 15 43
8 Arouca 34 12 6 16 42
9 Guimaraes 34 12 6 16 42
10 Estoril 34 10 9 15 39
11 Alverca 34 10 9 15 39
12 Rio Ave 34 8 12 14 36
13 Santa Clara 34 9 9 16 36
14 Nacional 34 9 7 18 34
15 Estrela 34 6 12 16 30
16 Casa Pia 34 6 12 16 30
17 Tondela 34 6 10 18 28
18 AVS 34 3 12 19 21
# TEAM MP GS GC +/- PTS
1 Sporting CP 34 89 24 +65 82
2 Benfica 34 74 25 +49 80
3 FC Porto 34 66 18 +48 88
4 SC Braga 34 64 36 +28 59
5 Estoril 34 54 57 -3 39
6 GIL Vicente 34 47 38 +9 50
7 Arouca 34 47 64 -17 42
8 Famalicao 34 42 29 +13 56
9 Guimaraes 34 39 51 -12 42
10 Estrela 34 38 56 -18 30
11 Nacional 34 37 45 -8 34
12 Moreirense 34 37 49 -12 43
13 Alverca 34 35 52 -17 39
14 Rio Ave 34 35 57 -22 36
15 Santa Clara 34 32 41 -9 36
16 Casa Pia 34 31 57 -26 30
17 Tondela 34 27 55 -28 28
18 AVS 34 27 67 -40 21
# TEAM MP xG xGC +/- PTS
1 Sporting CP 34 69.0 23.9 +45.1 82
2 Benfica 34 68.4 27.3 +41.1 80
3 FC Porto 34 62.1 22.5 +39.6 88
4 SC Braga 34 57.3 37.3 +20.0 59
5 Famalicao 34 45.6 33.7 +11.9 56
6 GIL Vicente 34 44.9 36.8 +8.1 50
7 Santa Clara 34 36.4 35.2 +1.2 36
8 Alverca 34 40.5 40.1 +0.4 39
9 Guimaraes 34 39.3 45.4 -6.1 42
10 Tondela 34 36.6 48.7 -12.1 28
11 Estoril 34 42.8 55.2 -12.4 39
12 Nacional 34 37.9 50.6 -12.7 34
13 Estrela 34 40.7 53.6 -12.9 30
14 Rio Ave 34 34.2 52.3 -18.1 36
15 Arouca 34 30.8 49.4 -18.6 42
16 Moreirense 34 31.3 51.7 -20.4 43
17 Casa Pia 34 31.6 54.8 -23.2 30
18 AVS 34 31.9 62.6 -30.7 21
Primeira Liga Portugal. Primeira Liga Predictions