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Lazio v Roma — Prediction, Odds & Stats

Sunday 21 September 2025 · ITA-Serie A · 2526

Serie A xG Prediction generated

0–1
0.67 – 1.23 xG
Shots
10 – 13
On target
2 – 6
Shots in box
6 – 12
xG per shot
0.07 – 0.10
Set-piece xG
0.11 – 0.24
Goals − xG
-0.67 – -0.28

AI prediction

ai-blend-oos No snapshot has been taken for this fixture yet; this is the stored price.
Lazio win
34.5%
Draw
29.5%
Roma win
35.9%

Probabilities, not certainties. How they are made: the methodology.

Was this pick made in advance?
A model whose name ends -oos is out of sample: it was fitted only on matches played before this one, so its pick is a genuine forecast rather than hindsight. Anything without that suffix was fitted on all available data.

What the chances say

Lazio have scored 13 from 14.4 expected and conceded 12 from 12.1 — both ends in line with the chances, so the recent record is a fair reflection.

LWDWLLWWWW last 10 scored 13 from 14.4 xG conceded 12 from 12.1 xG

Roma are conceding fewer than expected — 2.6 goals saved beyond what the chances suggest.

WDWWWWWWWW last 10 scored 27 from 27.0 xG conceded 4 from 6.6 xG

Finishing swings far more than chance creation, so a gap this size usually narrows. Over ten matches it is suggestive, not settled — a genuinely elite finisher beats expected goals for years.

What the model said

ModelHome / Draw / Away Expected goalsLikeliest score O2.5BTTSOutcome
ai-blend-oos 1.24–1.27 0% 0% 0% Away ✓
dc-xg-oos 1.46–1.28 1-1 12% 52% 55% Home ✗

A model whose name ends -oos was produced by the walk-forward backtest: it was fitted only on matches played before this one, so the pick is genuinely out of sample.

Reading the xG timeline
Each step up is a shot; the height of the step is how good the chance was. Dots mark goals. A side whose line climbs steadily created chances all match. A side that scored while its line stayed flat took a rare chance — that is finishing luck, and it rarely repeats.

Expected goals by minute

0.00.40.71.11.40'15'30'45'60'75'90'Lorenzo Pellegrini 37' — goal
Lazio 0.67 xGRoma 1.28 xG
Reading the shot map
Each circle is a shot, placed where it was taken. Bigger means a better chance; filled circles are goals. Clusters near the goal mean a side worked good openings; lots of small circles far out means shooting from poor positions and hoping. Hover any circle for the player, minute and chance quality.

Shot map

Pedro 16' — Missed Shot (0.05 xG, Open Play)Nuno Tavares 22' — Missed Shot (0.03 xG, Open Play)Evan Ferguson 27' — Saved Shot (0.03 xG, Open Play)Mattia Zaccagni 28' — Saved Shot (0.02 xG, Open Play)Alessio Romagnoli 29' — Missed Shot (0.04 xG, From Corner)Lorenzo Pellegrini 37' — Goal (0.10 xG, Open Play)Matìas Soulè Malvano 40' — Saved Shot (0.05 xG, Direct Freekick)Angelino 44' — Missed Shot (0.06 xG, From Corner)Bryan Cristante 44' — Blocked Shot (0.02 xG, From Corner)Lorenzo Pellegrini 45' — Saved Shot (0.10 xG, Open Play)Devyne Rensch 47' — Saved Shot (0.39 xG, Open Play)Evan Ferguson 47' — Missed Shot (0.13 xG, Open Play)Angelino 48' — Saved Shot (0.05 xG, Open Play)Boulaye Dia 53' — Missed Shot (0.31 xG, Open Play)Evan Ndicka 60' — Missed Shot (0.11 xG, From Corner)Valentín Castellanos 63' — Saved Shot (0.04 xG, Open Play)Danilo Cataldi 69' — Missed Shot (0.02 xG, From Corner)Valentín Castellanos 75' — Missed Shot (0.07 xG, Open Play)Tommaso Baldanzi 81' — Missed Shot (0.07 xG, Open Play)Valentín Castellanos 89' — Missed Shot (0.06 xG, Set Piece)Artem Dovbyk 89' — Missed Shot (0.09 xG, Open Play)Danilo Cataldi 93' — Shot On Post (0.02 xG, Open Play)Tommaso Baldanzi 96' — Missed Shot (0.07 xG, Open Play)
Lazio attacking right Roma attacking left Marker size is xG; filled markers are goals.

Every shot

MinTeamPlayerxG SituationBody partResultAssisted by
16' Lazio Pedro 0.05 Open Play Left Foot Missed Shot
22' Lazio Nuno Tavares 0.03 Open Play Left Foot Missed Shot Reda Belahyane
27' Roma Evan Ferguson 0.03 Open Play Right Foot Saved Shot Angelino
28' Lazio Mattia Zaccagni 0.02 Open Play Right Foot Saved Shot Nuno Tavares
29' Lazio Alessio Romagnoli 0.04 From Corner Missed Shot Pedro
37' Roma Lorenzo Pellegrini 0.10 Open Play Right Foot Goal Matìas Soulè Malvano
40' Roma Matìas Soulè Malvano 0.05 Direct Freekick Left Foot Saved Shot
44' Roma Angelino 0.06 From Corner Left Foot Missed Shot
44' Roma Bryan Cristante 0.02 From Corner Blocked Shot Matìas Soulè Malvano
45' Roma Lorenzo Pellegrini 0.10 Open Play Left Foot Saved Shot
47' Roma Devyne Rensch 0.39 Open Play Right Foot Saved Shot Evan Ferguson
47' Roma Evan Ferguson 0.13 Open Play Missed Shot Angelino
48' Roma Angelino 0.05 Open Play Left Foot Saved Shot Lorenzo Pellegrini
53' Lazio Boulaye Dia 0.31 Open Play Right Foot Missed Shot Danilo Cataldi
60' Roma Evan Ndicka 0.11 From Corner Missed Shot Matìas Soulè Malvano
63' Lazio Valentín Castellanos 0.04 Open Play Right Foot Saved Shot Pedro
69' Lazio Danilo Cataldi 0.02 From Corner Left Foot Missed Shot
75' Lazio Valentín Castellanos 0.07 Open Play Right Foot Missed Shot Mario Gila
81' Roma Tommaso Baldanzi 0.07 Open Play Right Foot Missed Shot
89' Lazio Valentín Castellanos 0.06 Set Piece Right Foot Missed Shot Luca Pellegrini
89' Roma Artem Dovbyk 0.09 Open Play Right Foot Missed Shot Niccolò Pisilli
93' Lazio Danilo Cataldi 0.02 Open Play Right Foot Shot On Post Matteo Guendouzi
96' Roma Tommaso Baldanzi 0.07 Open Play Left Foot Missed Shot Niccolò Pisilli

Players

Roma

PlayerMinGA ShKPxGxA xGChain
Devyne Rensch MR 90 0 0 1 0 0.39 0.00 0.62
Evan Ndicka DC 90 0 0 1 0 0.11 0.00 0.13
Gianluca Mancini DC 90 0 0 0 0 0.00 0.00 0.21
Mile Svilar GK 90 0 0 0 0 0.00 0.00 0.09
Mehmet Zeki Çelik DC 90 0 0 0 0 0.00 0.00 0.28
Kouadio Kone MC 90 0 0 0 0 0.00 0.00 0.28
Angelino ML 85 0 0 2 2 0.12 0.16 0.21
Bryan Cristante MC 85 0 0 1 0 0.02 0.00 0.13
Lorenzo Pellegrini AMC 77 1 0 2 1 0.20 0.05 0.39
Matìas Soulè Malvano FW 77 0 1 1 3 0.05 0.22 0.23
Evan Ferguson FW 70 0 0 2 1 0.16 0.39 0.55
Artem Dovbyk Sub 20 0 0 1 0 0.09 0.00 0.16
Tommaso Baldanzi Sub 13 0 0 2 0 0.14 0.00 0.14
Niccolò Pisilli Sub 13 0 0 0 2 0.00 0.16 0.16
Konstantinos Tsimikas Sub 5 0 0 0 0 0.00 0.00 0.00
Neil El Aynaoui Sub 5 0 0 0 0 0.00 0.00 0.00

Lazio

PlayerMinGA ShKPxGxA xGChain
Alessio Romagnoli DC 90 0 0 1 0 0.04 0.00 0.08
Mattia Zaccagni FWL 90 0 0 1 0 0.02 0.00 0.05
Mario Gila DC 90 0 0 0 1 0.00 0.07 0.07
Matteo Guendouzi MC 90 0 0 0 1 0.00 0.02 0.05
Ivan Provedel GK 90 0 0 0 0 0.00 0.00 0.00
Adam Marusic DR 90 0 0 0 0 0.00 0.00 0.05
Pedro FWR 83 0 0 1 2 0.05 0.08 0.12
Reda Belahyane Sub 77 0 0 0 1 0.00 0.03 0.03
Boulaye Dia FW 66 0 0 1 0 0.31 0.00 0.34
Nuno Tavares DL 50 0 0 1 1 0.03 0.02 0.05
Nicolo Rovella MC 50 0 0 0 0 0.00 0.00 0.02
Danilo Cataldi Sub 40 0 0 2 1 0.04 0.31 0.45
Luca Pellegrini Sub 40 0 0 0 1 0.00 0.06 0.07
Valentín Castellanos Sub 24 0 0 3 0 0.17 0.00 0.12
Fisayo Dele-Bashiru MC 13 0 0 0 0 0.00 0.00 0.00
Tijjani Noslin Sub 7 0 0 0 0 0.00 0.00 0.00
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Match

What this page is for

One fixture in full. The model's probability for every market it prices, the prices stored against them, the teams expected to feature, and for a match already played, the shot map and the xG timeline.

How to read the shot map

Every shot is placed where it was taken and sized by its chance of being scored. A cluster of small marks from distance and a clean sheet is a side that was busy without ever threatening; two big marks and a defeat is a side that had the better of it and lost anyway. Both happen constantly, and both are invisible in the score.

How to read the xG timeline

The steps are chances as they arrived, so the shape shows who was on top and when. A flat line that jumps once near the end is a smash and grab.

Things to watch

The stored prediction is the one made before the match, kept deliberately so it can be judged afterwards. It is not re-fitted with hindsight.

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