Antofagasta 1-3 Union La Calera – Result & Analysis
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Poisson model rates Antofagasta at 35%, yet other data sources diverge — this Antofagasta vs Union La Calera fixture contains genuine analytical tension.
✍️ Match Preview
Fixture Analysis
It is a Primera División clash, Regular Season - 23 as Antofagasta welcome Union La Calera to Estadio Regional Calvo y Bascuñán. Kick-off is set for Wednesday 29 September 2021 at 22:30 UTC.
Form Guide
Antofagasta — All Games: 3W 4D 3L from 10 Primera División outings this season, averaging 1.30 points per game. Last five: L W D D L. They are averaging 1.00 goals per game and conceding 1.20 — a modest attacking output that tempers optimism on the Over 2.5 market. 1 clean sheet from 10 outings provides some defensive foundation. Both teams have scored in 60% of their games — a high BTTS rate that carries real weight in the goals markets. This season is still relatively young for Antofagasta, so this record blends games from this season and last.
In front of their own supporters this season, Antofagasta have posted 6W 1D 3L at Estadio Regional Calvo y Bascuñán — 1.90 PPG. At home they are averaging 1.40 goals scored and 1.10 conceded per game. Both teams have scored in 70% of their home games — an outstanding BTTS rate that is a key data point for this fixture. Their home PPG of 1.90 is noticeably stronger than their overall 1.30 — Antofagasta are significantly better at Estadio Regional Calvo y Bascuñán than their overall form suggests.
Looking at all fixtures this season, Union La Calera stand at 5W 2D 3L from 10 Primera División matches — 1.70 PPG. Last five: D L L W W. Their scoring rate of 1.30 per game is modest, conceding 1.20 — not a side to back heavily on the Over 2.5 from their form alone. 3 clean sheets from 10 outings suggests some defensive organisation. Both teams have scored in 60% of their games — a noteworthy BTTS rate that supports the Yes market. This season is still relatively young for Union La Calera, so this record blends games from this season and last.
On the road, Union La Calera have gone 4W 3D 3L from 10 away fixtures this term (1.50 PPG). Away from home they average 1.20 goals scored and 1.30 conceded per game.
The form comparison is too close to call — 1.30 PPG (Antofagasta) versus 1.70 (Union La Calera). When the figures are this level, no pick can be reliably derived from recent results alone.
H2H
The H2H landscape is flat: 1 previous encounters have yielded 0 wins for Antofagasta, 1 for Union La Calera and 0 draws. A neutral reading in isolation.
The 1 previous encounters between these sides have been high-scoring affairs — 3.0 goals per contest on average. Historical precedent backs the Over 2.5 goals market. The most recent clash, on 1 May 2021, ended 1–2 with Union La Calera winning.
With the win record balanced, the strongest H2H-derived signal is in the goals market. At 3.0 goals per game historically, Over 2.5 is the cleaner angle to extract from the head-to-head data.
In-Play Profile
Antofagasta in-play tendencies (20 games, 9 at home): they score before half-time in 78% of fixtures in home games; when goalless at HT, a second-half goal follows 83% of the time; two or more arrive in the second half on 67% of those occasions; BTTS occurs in 67% of their matches (home games); Over 2.5 goals lands in 56% of games (home games).
Union La Calera in-play tendencies (20 games, 9 at away): they score before half-time in 78% of fixtures in away games; when goalless at HT, a second-half goal follows 75% of the time; BTTS occurs in 56% of their matches (away games); Over 2.5 goals lands in 67% of games (away games).
From a combined perspective, both sides have high BTTS rates — Antofagasta 70% and Union La Calera 50% — which reinforces the BTTS Yes angle from in-play data. The over/under 2.5 picture is inconclusive from the in-play data (Antofagasta 40% | Union La Calera 45%).
Poisson Model
The Poisson distribution model projects Antofagasta 1.35 xG and Union La Calera 1.32 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: Antofagasta attack 0.987 / defence 1.133 | Union La Calera attack 0.979 / defence 1.234. League average goals — home 1.110 / away 1.189. Union La Calera bring a strong defensive rating of 1.234 — this is suppressing Antofagasta's projected output below what their attack strength alone would suggest. Data: 20 Antofagasta games / 21 Union La Calera games used (CurrentSeason).
Result probabilities: Antofagasta 35% | Draw 31% | Union La Calera 34%. Fair-value odds: Antofagasta 2.86 | Draw 3.23 | Union La Calera 2.94. This is a low-confidence result — no outcome exceeds 45%. The draw at 31% is a primary outcome, not an afterthought.
Goals markets: Over 2.5 probability 50% | BTTS probability 57% | Total xG 2.67. Over/Under 2.5 is close to a coin-flip at 50%/50% — the total xG of 2.67 sits near the 2.5 margin; this is a low-edge market from a Poisson standpoint. BTTS probability of 57% is moderate — neither team is projected to score with enough certainty to make Yes a clear standalone call.
Summary & Verdict
The Poisson model's primary lean is Antofagasta at 35% — marginal model lean. With a 31% draw probability, Draw No Bet on Antofagasta offers a more defensible entry point than the straight win. The opposing side holds a 34% win probability per the model — this is not a banker and should be staked accordingly.
On the goals line, Poisson's 2.67 combined xG gives a 50% probability to Under 2.5 — Poisson-only — limited corroboration.
Poisson assigns a 57% probability to BTTS Yes based on the attack/defence strength model. Form rates corroborate: Antofagasta 70% | Union La Calera 50% BTTS from recent games.
The outsider holds a 34% win probability per the model — this is not a banker and should not be treated as one. Proportionate stakes are appropriate given the genuine contest the data projects.
🔮 Your Prediction
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💡 Key Insights
🏟️ Match Context
• Fixture: Antofagasta vs Union La Calera | Competition: Primera División, Regular Season - 23 | Venue: Estadio Regional Calvo y Bascuñán • Kick-off: Wednesday 29 Sep 2021, 22:30 UTC • Data inputs: H2H history, form splits, prediction model signals, and market pricing
📊 Statistical Prediction
• Poisson result probabilities: Antofagasta 35% | Draw 31% | Union La Calera 34% • Poisson goal markets: Over 2.5 50% | BTTS 57% | xG Antofagasta 1.35 / Union La Calera 1.32 • Poisson strength factors: Antofagasta attack 0.987 / def 1.133 | Union La Calera attack 0.979 / def 1.234 | league avg home 1.110 / away 1.189 • Poisson stance: Antofagasta (35%) — low confidence — close contest
🧮 Prediction Model
1.35
Antofagasta xG
Expected Goals
1.32
Union La Calera xG
57%
BTTS
77%
Over 1.5
50%
Over 2.5
28%
Over 3.5
Full score-by-score matrix & model internals in the "Full Poisson Detail" section below ↓
⚠️ This analysis is generated algorithmically from statistical data and is intended for informational purposes only. It does not constitute betting advice. Please gamble responsibly.
❓ Frequently Asked Questions
What time does Antofagasta vs Union La Calera kick off?
Antofagasta vs Union La Calera kicked off at 22:30 on Wednesday 29 September 2021 at Estadio Regional Calvo y Bascuñán.
What was the final score in Antofagasta vs Union La Calera?
Antofagasta 1 - 3 Union La Calera.
Where is Antofagasta vs Union La Calera being played?
The match is being played at Estadio Regional Calvo y Bascuñán.
What competition is Antofagasta vs Union La Calera part of?
Antofagasta vs Union La Calera is a Regular Season - 23 fixture in the Primera División (Chile).
Who is favourite to win Antofagasta vs Union La Calera?
Our statistical model gives Antofagasta a 35% chance of winning, Union La Calera a 34% chance, and a 31% chance of a draw — making Antofagasta the favourite.
Will both teams score in Antofagasta vs Union La Calera?
Our model estimates a 57% probability that both Antofagasta and Union La Calera will score (BTTS).
Will Antofagasta vs Union La Calera have over 2.5 goals?
Our model puts the probability of over 2.5 goals in this match at 50%.
What is the head-to-head record between Antofagasta and Union La Calera?
Record (1 meetings): Antofagasta 0W | Draws 0 | Union La Calera 1W.
What form are Antofagasta and Union La Calera in?
Antofagasta (all comps): 3W-4D-3L in 10 | 1.30 PPG | GF 1.00 / GA 1.20 | L5 L-W-D-D-L. Union La Calera (all comps): 5W-2D-3L in 10 | 1.70 PPG | GF 1.30 / GA 1.20 | L5 D-L-L-W-W.
🧮 Model Insight
How the Model Works This Match
Working from Antofagasta's attack rating (0.99) and Union La Calera's defence rating (1.23), the model arrives at 1.35 expected goals for the home side. The same calculation in reverse, Union La Calera's attack versus Antofagasta's defence, projects 1.32 expected goals for the visitors.
These ratings are built from 20/21 games of current-season data — a full enough sample to trust.
The Exact-Score Picture
Run the expected-goals figures through the full scoreline distribution and 1-1 emerges as the single most likely result, at 13.9%. Close behind: 0-0 (8.5%), 2-1 (8.3%). Those top three scorelines alone account for 31% of the model's total probability mass — a relatively concentrated, predictable distribution for this fixture.
Most Likely Outcome
Antofagasta Win
35%
2.82
31%
3.26
34%
2.95
Top 3 Most Likely Scorelines
1 – 1
12.3%
Draw
Most likely
1 – 0
9.4%
Home win
0 – 1
9.1%
Away win
Expected Goals & Win Odds
1.35
Antofagasta xG
Total xG
2.67
1.32
Union La Calera xG
2.82
35%
Home win
3.26
31%
Draw
2.95
34%
Away win
Goals Markets
75%
Over 1.5
1.33
25%
Under 1.5
4.00
50%
Over 2.5
2.00
50%
Under 2.5
2.00
28%
Over 3.5
3.57
72%
Under 3.5
1.39
13%
Over 4.5
7.69
87%
Under 4.5
1.15
Match Markets
Both Teams to Score
57%
BTTS Yes
1.76
43%
BTTS No
2.31
Clean Sheet
27%
3.74
26%
3.87
Win to Nil
9%
10.55
9%
11.40
Score Probability Matrix (%)
| H \ A | 0 | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
| 0 | 6.9 | 9.1 | 6.0 | 2.6 | 0.9 | 0.2 |
| 1 | 9.4 | 12.3 | 8.1 | 3.6 | 1.2 | 0.3 |
| 2 | 6.3 | 8.3 | 5.5 | 2.4 | 0.8 | 0.2 |
| 3 | 2.8 | 3.8 | 2.5 | 1.1 | 0.4 | 0.1 |
| 4 | 1.0 | 1.3 | 0.8 | 0.4 | 0.1 | – |
| 5 | 0.3 | 0.3 | 0.2 | 0.1 | – | – |
Green = home win · Grey = draw · Amber = away win · Outlined cell = most likely score
▶ Model Internals
❓ Frequently Asked Questions
What is the most likely scoreline for Antofagasta vs Union La Calera?
Our Poisson model rates 1-1 as the single most likely exact scoreline, at 13.9%.
How many goals are Antofagasta and Union La Calera expected to score?
The model projects 1.35 expected goals for Antofagasta and 1.32 for Union La Calera, a combined total of 2.67.
How confident is the prediction model for Antofagasta vs Union La Calera?
Not very — the model's leading outcome sits at just 35%, meaning this is rated as a genuinely open contest with no dominant favourite.
📈 Form Insight
Form at a Glance
Antofagasta come into this having played 20 games, going 7W 7D 6L for 1.40 points per game. Their last five reads L-W-D-D-L. The sample for Antofagasta is still a mix of this season and last, given how young the current campaign is.
On the other side, Union La Calera sit at 1.85 PPG from 20 outings (11W 4D 5L), a run that reads D-L-L-W-W across their last five. The sample for Union La Calera is still a mix of this season and last, given how young the current campaign is.
Union La Calera carry the stronger recent form of the two, 0.45 PPG clear of Antofagasta — worth weighing alongside whatever the head-to-head and market data say.
Venue Form
Antofagasta's home form reads 6W 1D 2L across 9 games on their own ground, a 2.11 PPG return. That's noticeably better than their 1.40 PPG overall — Antofagasta are a different proposition at home than their general record suggests.
Away from home, Union La Calera have taken 1.56 points per game from 9 outings (4W 2D 3L).
Comparing the two in their relevant venue splits, Antofagasta come out ahead — a more targeted read than the overall PPG figures above, since it strips out games played in the opposite context.
Goals in Recent Form
Antofagasta are averaging 1.20 goals scored and 1.20 conceded per game recently; Union La Calera are on 1.25 scored and 1.10 conceded.
On BTTS specifically: Antofagasta have seen both teams score in 70% of their recent games.
Defensively: Union La Calera in 35% — worth knowing if you're weighing up clean-sheet or BTTS-No markets.
Last 20 Results — Primera División
Current season: same league only · Previous season: all leagues (covers promoted/relegated teams)
Antofagasta
Blended
Union La Calera
Blended
❓ Frequently Asked Questions
What form are Antofagasta and Union La Calera in coming into this match?
Antofagasta have gone 7W 7D 6L in their last 20 games (1.40 PPG), while Union La Calera have gone 11W 4D 5L in their last 20 (1.85 PPG).
Which team has the better venue record — Antofagasta at home or Union La Calera away?
Antofagasta's home record (2.11 PPG) is the stronger of the two venue-specific splits — Antofagasta at home: 2.11 PPG; Union La Calera away: 1.56 PPG.
Have Antofagasta or Union La Calera been keeping clean sheets recently?
Antofagasta have kept a clean sheet in 15% of their recent games, Union La Calera in 35%.
⚔️ Rivalry Insight
Fixture History
4 meetings separate these sides on the data we hold, the series stretching back to May 2021. Every recorded meeting has come in Primera División. It has been a while since the last meeting — 14 August 2022, some 1 year back — so squads and form on both sides may look very different now.
Streaks & Records
The last 2 meetings have all been drawn — an unusually settled recent run for this fixture.
Antofagasta's record when hosting Union La Calera specifically: 0W 1D 1L from 2 games — a narrower, venue-specific slice of the head-to-head picture.
Last 4 Meetings
0
Antofagasta
2
Draws
2
Union La Calera
Recent Meetings
❓ Frequently Asked Questions
What is the head-to-head record between Antofagasta and Union La Calera?
From 4 meetings on record, Antofagasta have won 0, Union La Calera have won 2, and 2 have been drawn.
When did Antofagasta and Union La Calera last play each other?
They last met on 14 August 2022, when Union La Calera 1-1 Antofagasta.
Who has won more matches between Antofagasta and Union La Calera?
Union La Calera have the better head-to-head record, with 2 wins from 4 meetings.
📈 Trading Insight
First-Half Patterns
Antofagasta are typically involved in an early goal — the half-time board shows at least one in 78% of their matches. They've gone in front at half-time 56% of the time.
Union La Calera are typically involved in an early goal — the half-time board shows at least one in 78% of their matches. They've gone in front at half-time 44% of the time, though they've let that lead slip 22% of the time they've held it — worth watching if they're only ahead by one. They've also shown some fight from behind, salvaging a draw or win after trailing at half-time in 11% of those situations.
Full-Time Trends
BTTS sits in mixed territory for this pairing — Antofagasta 67%, Union La Calera 56% — no strong lean either way from the trading data alone.
Goals have flowed in these teams' recent matches — Over 2.5 has landed at 56% for Antofagasta and 67% for Union La Calera. Stepping up a level, Over 3.5 has also landed reasonably often — 11% and 22% respectively — worth a look for goal-hungry markets.
On the defensive side: Union La Calera in 33%.
Current season: same league only. Previous season: all leagues (covers promoted/relegated teams). All = any venue | Venue = Antofagasta home games / Union La Calera away games. HT metrics require half-time score data — shown as — where unavailable.
❓ Frequently Asked Questions
Do both teams usually score when Antofagasta play Union La Calera?
Yes — based on recent matches, both teams have scored in 67% of Antofagasta's games and 56% of Union La Calera's, a combined rate that favours BTTS Yes.
Is Antofagasta vs Union La Calera usually a high-scoring fixture?
Recent trends suggest it could be — Over 2.5 goals has landed in 56% of Antofagasta's matches and 67% of Union La Calera's.
Do Antofagasta and Union La Calera tend to score early?
Antofagasta have had a goal before half-time in 78% of their recent matches, Union La Calera in 78% — a useful reference point for first-half goal markets.
Union La Calera cruise to a comfortable 1-3 victory over Antofagasta.
📝 Match Report
How It Unfolded
Union La Calera beat Antofagasta 1-3 at Estadio Regional Calvo y Bascuñán, Regular Season - 23, in the Primera División. That is the final score; the rest of this report grades it against what the data forecast beforehand.
The Model vs The Result
The Poisson model went into this projecting Antofagasta 1.35 xG and Union La Calera 1.32 xG, a combined 2.67. The scoreboard read 1-3 for 4 actual goals. Union La Calera outscored their 1.32 projection by 1.7. Those figures were built on strength ratings of Antofagasta attack 0.99 / defence 1.13 against Union La Calera attack 0.98 / defence 1.23, drawn from 20/21 games (CurrentSeason).
On the result, the model split it Antofagasta 35% | Draw 31% | Union La Calera 34%, with Antofagasta to win its most likely call at 35%. The actual Union La Calera win had been the model's second-ranked read at 34%, so the result diverged from the top call without being a shock.
Goals & Markets
The model rated Over 2.5 goals at 50%. The game delivered 4, so it went over — the model's lean was correct. Over 1.5 had been 77% and landed. Over 3.5 was 28% and came in. On both teams to score, the model sat at 57% and the match saw both sides score — another call in the model's favour. Historically the two sides average 42% Over 2.5 across their same-competition games (Antofagasta 40%, Union La Calera 45%), a base rate that pointed the other way from today's over. Their combined BTTS history runs at 60%, which matched the both-scored outcome.
Trading Patterns vs Reality
Antofagasta's trading profile (20 games, 9 home) set some clear expectations: BTTS lands in 70% of their matches — today it did.
Union La Calera's trading profile (20 games, 9 away) set some clear expectations: BTTS lands in 50% of their matches — today it did; they keep a clean sheet 35% of the time, and conceded here.
Form vs Result
On form, Union La Calera arrived the stronger side — 1.85 PPG against 1.40. The form guide was vindicated by the result. Antofagasta (home/away splits) shipped 3 against a 1.00 concession average — a leakier day than usual. Union La Calera (home/away splits) scored 3 against a 1.33 average — above their attacking norm.
Verdict
Grading the result against the stored data, 2 of 4 pre-match signals came in: result (miss), Over 2.5 (miss), BTTS (hit), form (hit). A mixed scorecard — the data caught the broad shape of the game but not every market.
💡 Key Insights
⚠️ This match report is generated algorithmically from the final score, our prediction model, and each team's historical form and trading data. Analysis is for informational purposes only.