Round 13 · 1990

Autódromo do Estoril

Estoril, Portugal · September 23, 1990 · Circuit History · Wikipedia

The race, in perspective

Race debrief

What did we expect after qualifying—and who beat it?

R131990
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33 stored results 33/33 Elo snapshots 25/33 numbered grid slots 0/33 qualifying results
Elo × qualifying → race result

Did they beat the expectation?

A strong driver recovering from a poor qualifying position isn't automatically a surprise. This model estimates a finish from both inputs, then compares it with what happened.

Experimental · v1

Expected finish assumes a classified finish. DNFs stay in the full grid but receive no performance verdict. Qualifying is not the starting grid; grid differences are flagged, not silently substituted.

This race has insufficient earlier history: 0/20 races and 0/200 classified finishes with Elo and qualifying. Estimates are withheld.

0/33 entrants have an estimate. Missing Elo or qualifying stays visible below; a grid position is not used as a qualifying result.

Top 3

Beat the estimate

No comparable estimates available for this race yet.

Flop 3

Below the estimate

No comparable estimates available for this race yet.

0/33 entrants assessed. Up to three per side, ranked by expected minus actual finish. DNFs, missing estimates and gaps rounding to 0.0 are excluded. “Flop” means below the model's estimate—not poor driving. A ranked gap can still be inside the usual error range.

Full grid: pre-race Elo rank, qualifying position, estimated finish, actual result and difference from expectation. Positive differences mean finishing ahead of the estimate.
DriverPre-race EloQualifyingExpectedResultP1 ← position → P33vs expectedReading
N. MansellFerrari #102256 No error range P1 Not assessedQualifying unavailable
A. SennaMcLaren #12550 No error range P2 Not assessedQualifying unavailable
A. ProstFerrari #22482 No error range P3 Not assessedQualifying unavailable
G. BergerMcLaren #32449 No error range P4 Not assessedQualifying unavailable
N. PiquetBenetton #42426 No error range P5 Not assessedQualifying unavailable
A. NanniniBenetton #62328 No error range P6 Not assessedQualifying unavailable
R. PatreseWilliams #52329 No error range P7 Not assessedQualifying unavailable
J. AlesiTyrrell #142180 No error range P8 Not assessedQualifying unavailable
M. AlboretoArrows #152174 No error range P9 Not assessedQualifying unavailable
N. LariniLigier #112246 No error range P10 Not assessedQualifying unavailable
P. MartiniMinardi #242051 No error range P11 Not assessedQualifying unavailable
M. GugelminLeyton House #172153 No error range P12 Not assessedQualifying unavailable
A. CaffiArrows #72290 No error range DNFAccident Not assessedQualifying unavailable
A. SuzukiLarrousse #212110 No error range DNFAccident Not assessedQualifying unavailable
E. PirroDallara #232061 No error range P15 Not assessedQualifying unavailable
P. AlliotLigier #192130 No error range DNFAccident Not assessedQualifying unavailable
D. BrabhamBrabham #271943 No error range DNFGearbox Not assessedQualifying unavailable
I. CapelliLeyton House #132232 No error range DNFEngine Not assessedQualifying unavailable
T. BoutsenWilliams #82265 No error range DNFEngine Not assessedQualifying unavailable
É. BernardLarrousse #122245 No error range DNFGearbox Not assessedQualifying unavailable
S. ModenaBrabham #202130 No error range DNFGearbox Not assessedQualifying unavailable
M. DonnellyTeam Lotus #162166 No error range DNFAlternator Not assessedQualifying unavailable
D. WarwickTeam Lotus #92259 No error range DNFThrottle Not assessedQualifying unavailable
Y. DalmasAGS #281861 No error range DNFHalfshaft Not assessedQualifying unavailable
A. de CesarisDallara #222096 No error range DNFSpun off Not assessedQualifying unavailable
S. NakajimaTyrrell #182140 Grid unnumbered No error range DNSWithdrew Not assessedQualifying unavailable
O. GrouillardOsella #252007 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
P. BarillaMinardi #261993 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
G. TarquiniAGS #291848 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
B. GachotColoni #311675 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
R. MorenoEuro Brun #301720 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
C. LangesEuro Brun #331641 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
B. GiacomelliLife #321649 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
How useful is the model? See the historical check

There is not enough earlier history for a rolling hold-out check yet.

The range scales the 80th percentile of earlier held-out absolute errors to this field size, rounding outward. It is an empirical error guide, not a guaranteed 80% chance for a particular driver. We require at least five checked races and 100 checked finishes before showing it.

Inputs are field-normalised Elo rank and qualifying position. The target is position among all race entries, trained only on classified finishers. Estimates are averages, not a unique predicted finishing order. Penalties, the circuit, weather, incidents and strategy aren't model inputs. Historical qualifying coverage is patchy; this is an exploratory backtest on corrected records, not proof of live forecasting accuracy.

The rating ledger

What changed in Elo?

These are actual rating changes. The expectation model above does not change Elo or fantasy scoring.

Largest Elo gain

Mansell+74.4 Elo

Largest Elo loss

Warwick−66.2 Elo

Largest grid-to-finish gain

Larini+12 places

The bigger picture

Championship after this round

Top five in the stored standings. Points include sprint results where applicable.

  1. 1 Senna 78pts 0
  2. 2 Prost 60pts 0
  3. 3 Berger 40pts 0
  4. 4 Boutsen 27pts 0
  5. 5 Piquet 26pts 0

Movement since round 12. A dash means the earlier standing is unavailable.

Explore the season →
Across the garage

Teammate results

Two-driver constructor entries from this race. A result comparison, not an adjustment for strategy or reliability.

Arrows

AlboretoP9+42.2 Elo
CaffiDNF−9.2 Elo

Non-finish recorded; no finishing gap comparison.

Ligier

LariniP10+19.6 Elo
AlliotDNF+7.5 Elo

Non-finish recorded; no finishing gap comparison.

Brabham

BrabhamDNF+40.6 Elo
ModenaDNF−24.2 Elo

Non-finish recorded; no finishing gap comparison.

AGS

DalmasDNF+10.2 Elo
TarquiniDNQ−19.5 Elo

Non-finish recorded; no finishing gap comparison.

What this analysis can—and cannot—tell you

This debrief is calculated from stored results and rating snapshots. The experimental expectation model learns from earlier races only, using Elo rank and qualifying together; it never feeds back into Elo. It is not a separately reviewed race report.

Elo uses the result order, including retirements. It does not isolate driver skill from the car, reliability, penalties or strategy. Elo seed comparisons use pre-race ratings, never today's ratings. Equal ratings share the midpoint of their rank range (for example, tied first and second become seed 1.5).

Grid gains use numbered starting slots and classified finishes only. Zero or missing grid values are excluded; a position gained is not necessarily an overtake. Qualifying gaps use the latest segment both teammates have a valid time for, never Q1 against Q3.

Lap-by-lap pace, tyre stints, pit-stop execution and safety-car effects are not available in this report. Missing data is omitted, not inferred.

Read the Elo methodology →
33
Result Entries
Avg Elo
Highest Elo (Senna)
20
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇬🇧 N.Mansell 1 +9 25 P6 +74.4 2,331
P2 🇧🇷 A.Senna 3 +1 +6 78 P1 +17.1 2,567
P3 🇫🇷 A.Prost 2 -1 +4 60 P2 +19.7 2,502
P4 🇦🇹 G.Berger 4 +3 40 P3 +18.3 2,467
P5 🇧🇷 N.Piquet 6 +1 +2 26 P5 +15.7 2,442
P6 🇮🇹 A.Nannini 9 +3 +1 17 P8 +27.4 2,356
P7 🇮🇹 R.Patrese 5 -2 0 17 P7 +20.8 2,350
P8 🇫🇷 J.Alesi 8 0 13 P9 +47.2 2,227
P9 🇮🇹 M.Alboreto 19 +10 0 0 P22 +42.2 2,216
P10 🇮🇹 N.Larini 22 +12 0 0 P23 +19.6 2,265
P11 🇮🇹 P.Martini 16 +5 0 0 P19 +56.9 2,108
P12 🇧🇷 M.Gugelmin 14 +2 0 1 P17 +27.7 2,181
DNF 🇮🇹 A.Caffi 17 0 2 P13 -9.2 2,281
DNF 🇯🇵 A.Suzuki 11 0 1 P16 +24.8 2,135
P15 🇮🇹 E.Pirro 13 -2 0 0 P24 +29.3 2,091
DNF 🇫🇷 P.Alliot 20 0 0 P21 +7.5 2,138
DNF 🇦🇺 D.Brabham 25 0 0 P33 +40.6 1,983
DNF 🇮🇹 I.Capelli 12 0 6 P10 -28.3 2,203
DNF 🇧🇪 T.Boutsen 7 0 27 P4 -42.0 2,223
DNF 🇫🇷 É.Bernard 10 0 5 P11 -43.9 2,201
DNF 🇮🇹 S.Modena 23 0 2 P14 -24.2 2,106
DNF 🇬🇧 M.Donnelly 15 0 0 P18 -38.9 2,127
DNF 🇬🇧 D.Warwick 21 0 3 P12 -66.2 2,193
DNF 🇫🇷 Y.Dalmas 24 0 0 P34 +10.2 1,871
DNF 🇮🇹 A.de Cesaris 18 0 0 P25 -42.1 2,054
DNS 🇯🇵 S.Nakajima 0 0 2 P15 -58.2 2,081
DNQ 🇫🇷 O.Grouillard 0 0 0 P29 -35.5 1,971
DNQ 🇮🇹 P.Barilla 0 0 0 P26 -39.1 1,954
DNQ 🇮🇹 G.Tarquini 0 0 0 P30 -19.5 1,828
DNQ 🇧🇪 B.Gachot 0 0 0 P36 -3.8 1,671
DNQ 🇧🇷 R.Moreno 0 0 0 P31 -15.1 1,705
DNQ 🇮🇹 C.Langes 0 0 0 P37 -13.2 1,628
DNQ 🇮🇹 B.Giacomelli 0 0 0 P38 -20.4 1,629

Qualifying results are not available for this race.

Elo Changes