Real Sociedad 1-1 Athletic Club – Result & Analysis

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Poisson model projects a closely fought contest — draw probability sits at 45% as Real Sociedad take on Athletic Club.

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Analysis & Preview

A La Liga encounter, Regular Season - 12 sees Athletic Club travel to Reale Arena to take on Real Sociedad. The game is scheduled for Sunday 31 October 2021, 20:00 UTC.

Form Analysis

Looking at all fixtures this season, Real Sociedad stand at 7W 3D 0L from 10 La Liga matches — 2.40 PPG. Last five: W D W D W. They are averaging 1.40 goals per game and conceding 0.50 — a modest attacking output that tempers optimism on the Over 2.5 market. Defensively, conceding just 0.50 per game is an exceptional defensive record — one of the tightest in the division. 7 clean sheets from 10 games (70%) is a standout defensive return — they are keeping their net clean in more than half their matches. Both teams have scored in just 30% of their matches, indicating a tendency toward clean sheets or low-scoring outcomes. This season is still relatively young for Real Sociedad, so this record blends games from this season and last.

In front of their own supporters this season, Real Sociedad have posted 4W 1D 0L at Reale Arena — 2.60 PPG. At home they are averaging 0.80 goals scored and 0.00 conceded per game. 5 clean sheets from 5 home games (100%) — they are an exceptionally hard side to score against at Reale Arena.

Across all La Liga games this season, Athletic Club have recorded 4W 5D 1L from 10 outings — 1.70 PPG. Last five: L D W W D. Their scoring rate of 1.00 per game is modest, conceding 0.60 — not a side to back heavily on the Over 2.5 from their form alone. Defensively, 0.60 goals conceded per game is elite-level — a side this difficult to score against is a real threat to Over 2.5 and BTTS Yes. 5 clean sheets from 10 games (50%) is an exceptional defensive record — they are keeping clean sheets more often than not. This season is still relatively young for Athletic Club, so this record blends games from this season and last.

On the road, Athletic Club have gone 1W 4D 0L from 5 away fixtures this term (1.40 PPG). Away from home they average 0.60 goals scored and 0.40 conceded per game. 3 away clean sheets from 5 games (60%) — they are as difficult to score against on the road as they are at home.

On current form, Real Sociedad have the edge — a 0.70 PPG advantage (2.40 vs 1.70) represents a meaningful gap. That momentum makes them the form-based pick, though if the outright price looks short, Draw No Bet is worth comparing.

Trading Patterns

Real Sociedad in-play and half-time data (10 games, 5 at home): they score before half-time in 20% of fixtures in home games; when goalless at HT, a second-half goal follows 83% of the time; BTTS occurs in 0% of their matches (home games); Over 2.5 goals lands in 0% of games (home games); they keep a clean sheet 70% of the time.

Athletic Club in-play and half-time data (10 games, 5 at away): they score before half-time in 40% of fixtures in away games; when goalless at HT, a second-half goal follows 60% of the time; two or more arrive in the second half on 60% of those occasions; BTTS occurs in 40% of their matches (away games); Over 2.5 goals lands in 0% of games (away games); they keep a clean sheet 50% of the time.

BTTS rates are mixed from the trading data — Real Sociedad 30% versus Athletic Club 50%; no strong lean in either direction. Under 2.5 goals has backing from the in-play data — both teams register low Over 2.5 rates (Real Sociedad 20% | Athletic Club 20%).

Poisson Model

The Poisson distribution model projects Real Sociedad 0.68 xG and Athletic Club 0.58 xG. These expected goals figures are the primary input: they feed a goal-probability matrix across all scoreline combinations to derive the result and market probabilities below. Underlying strength ratings: Real Sociedad attack 0.734 / defence 0.758 | Athletic Club attack 0.741 / defence 0.871. League average goals — home 1.071 / away 1.035. Real Sociedad's attack strength of 0.734 is below the league average — the 0.68 xG projection reflects a team that scores at a discount to the division norm. Real Sociedad's defence rating of 0.758 is below average — the home backline is amplifying the visitor's projected output. Data: 11 Real Sociedad games / 10 Athletic Club games used (CurrentSeason).

Result probabilities: Real Sociedad 31% | Draw 45% | Athletic Club 24%. Fair-value odds: Real Sociedad 3.23 | Draw 2.22 | Athletic Club 4.17. The draw (45%) is the Poisson-preferred outcome — neither side is more likely to win than to draw, making draw-inclusive markets the most model-aligned approach.

Goals markets: Over 2.5 probability 13% | BTTS probability 24% | Total xG 1.27. Under 2.5 is the strongly backed market at 87% probability — total xG of 1.27 sits well below the 2.5 threshold. The model is projecting a tight, low-scoring match based on both sides' defensive quality. BTTS No has firm model support at 76% — Athletic Club's lower xG of 0.58 creates a meaningful probability of a scoring blank, which suppresses the BTTS Yes probability to 24%.

Our Verdict

The Poisson model's preferred outcome is the draw at 45% — neither side is more likely to win than to draw. Draw-inclusive markets are the most model-aligned approach. Home win at 31% and away win at 24% are close enough that backing either outright carries significant draw exposure.

Poisson projects 1.27 total expected goals, pointing to Under 2.5 at 13% probability — reasonable conviction, supported by form averaging 0.9 goals per game.

The Poisson model's BTTS call is No at 24%. Form rates corroborate: Real Sociedad 0% | Athletic Club 40% BTTS from recent games.

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