Round 13 · 1989

Autódromo do Estoril

Estoril, Portugal · September 24, 1989 · Circuit History · Wikipedia

The race, in perspective

Race debrief

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

R131989
Share this debrief
Preview share card ↗
39 stored results 39/39 Elo snapshots 26/39 numbered grid slots 0/39 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.

0/39 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.

0/39 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 → P39vs expectedReading
G. BergerFerrari #112207 No error range P1 Not assessedQualifying unavailable
A. ProstMcLaren #12563 No error range P2 Not assessedQualifying unavailable
S. JohanssonOnyx #252072 No error range P3 Not assessedQualifying unavailable
A. NanniniBenetton #82225 No error range P4 Not assessedQualifying unavailable
P. MartiniMinardi #72240 No error range P5 Not assessedQualifying unavailable
J. PalmerTyrrell #142174 No error range P6 Not assessedQualifying unavailable
S. NakajimaTeam Lotus #202145 No error range P7 Not assessedQualifying unavailable
M. BrundleBrabham #102211 No error range P8 Not assessedQualifying unavailable
P. AlliotLarrousse #272045 No error range P9 Not assessedQualifying unavailable
M. GugelminMarch #182148 No error range P10 Not assessedQualifying unavailable
M. AlboretoLarrousse #262058 No error range P11 Not assessedQualifying unavailable
L. Pérez-SalaMinardi #122197 No error range P12 Not assessedQualifying unavailable
R. ArnouxLigier #222114 No error range P13 Not assessedQualifying unavailable
S. ModenaBrabham #242086 No error range P14 Not assessedQualifying unavailable
R. PatreseWilliams #52313 No error range DNFOverheating Not assessedQualifying unavailable
T. BoutsenWilliams #32374 No error range DNFOverheating Not assessedQualifying unavailable
A. SennaMcLaren #22384 No error range DNFCollision Not assessedQualifying unavailable
N. MansellFerrari #42373 No error range DSQDisqualified Not assessedQualifying unavailable
D. WarwickArrows #62247 No error range DNFAccident Not assessedQualifying unavailable
N. PiquetTeam Lotus #92220 No error range DNFCollision Not assessedQualifying unavailable
A. CaffiDallara #152169 No error range DNFCollision Not assessedQualifying unavailable
E. PirroBenetton #162157 No error range DNFSuspension Not assessedQualifying unavailable
I. CapelliMarch #192147 No error range DNFEngine Not assessedQualifying unavailable
E. CheeverArrows #172152 No error range DNFSpun off Not assessedQualifying unavailable
A. de CesarisDallara #132197 No error range DNFElectrical Not assessedQualifying unavailable
R. MorenoColoni #331820 No error range DNFElectrical Not assessedQualifying unavailable
J. HerbertTyrrell #232091 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
O. GrouillardLigier #212116 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
P. RaphanelRial #371712 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
C. DannerRial #291930 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
Y. DalmasAGS #351751 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
J. JärvilehtoOnyx #282000 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
P. GhinzaniOsella #341770 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
O. LarrauriEuro Brun #361731 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
G. TarquiniAGS #311860 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
N. LariniOsella #301915 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
A. SuzukiZakspeed #391621 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
B. SchneiderZakspeed #381691 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
E. BertaggiaColoni #321843 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 grid-to-finish gain

Nakajima+18 places

The bigger picture

Championship after this round

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

  1. 1 Prost 75pts 0
  2. 2 Senna 51pts 0
  3. 3 Mansell 38pts 0
  4. 4 Patrese 28pts 0
  5. 5 Boutsen 24pts 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.

McLaren

ProstP2+12.5 Elo
SennaDNF−50.4 Elo

Non-finish recorded; no finishing gap comparison.

March

GugelminP10+43.0 Elo
CapelliDNF−32.6 Elo

Non-finish recorded; no finishing gap comparison.

Arrows

WarwickDNF−33.6 Elo
CheeverDNF−39.8 Elo

Non-finish recorded; no finishing gap comparison.

Rial

RaphanelDNQ+24.2 Elo
DannerDNQ−21.0 Elo

Non-finish recorded; no finishing gap comparison.

AGS

DalmasDNQ+6.7 Elo
TarquiniDNQ−35.8 Elo

Non-finish recorded; no finishing gap comparison.

Osella

GhinzaniDNQ−7.9 Elo
LariniDNQ−52.9 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 →
39
Result Entries
Avg Elo
Highest Elo (Prost)
25
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇦🇹 G.Berger 2 +1 +9 15 P7 +81.0 2,288
P2 🇫🇷 A.Prost 4 +2 +6 75 P1 +12.5 2,576
P3 🇸🇪 S.Johansson 12 +9 +4 6 P10 +103.1 2,175
P4 🇮🇹 A.Nannini 13 +9 +3 17 P6 +59.1 2,284
P5 🇮🇹 P.Martini 5 +2 4 P19 +49.7 2,290
P6 🇬🇧 J.Palmer 18 +12 +1 2 P22 +59.8 2,234
P7 🇯🇵 S.Nakajima 25 +18 0 0 P27 +61.4 2,206
P8 🇬🇧 M.Brundle 10 +2 0 2 P23 +39.0 2,250
P9 🇫🇷 P.Alliot 17 +8 0 0 P29 +74.6 2,120
P10 🇧🇷 M.Gugelmin 14 +4 0 4 P16 +43.0 2,191
P11 🇮🇹 M.Alboreto 21 +10 0 6 P11 +59.8 2,118
P12 🇪🇸 L.Pérez-Sala 9 -3 0 1 P26 +19.1 2,216
P13 🇫🇷 R.Arnoux 23 +10 0 2 P21 +34.1 2,148
P14 🇮🇹 S.Modena 11 -3 0 4 P17 +35.2 2,121
DNF 🇮🇹 R.Patrese 6 0 28 P4 -25.0 2,288
DNF 🇧🇪 T.Boutsen 8 0 24 P5 -42.8 2,331
DNF 🇧🇷 A.Senna 1 0 51 P2 -50.4 2,333
DSQ 🇬🇧 N.Mansell 3 0 38 P3 -54.4 2,319
DNF 🇬🇧 D.Warwick 22 0 6 P12 -33.6 2,213
DNF 🇧🇷 N.Piquet 20 0 9 P8 -33.1 2,187
DNF 🇮🇹 A.Caffi 7 0 4 P18 -26.4 2,142
DNF 🇮🇹 E.Pirro 16 0 0 P28 -29.2 2,127
DNF 🇮🇹 I.Capelli 24 0 0 P30 -32.6 2,114
DNF 🇺🇸 E.Cheever 26 0 6 P9 -39.8 2,112
DNF 🇮🇹 A.de Cesaris 19 0 4 P15 -56.8 2,140
DNF 🇧🇷 R.Moreno 15 0 0 P35 +24.2 1,845
DNQ 🇬🇧 J.Herbert 0 0 5 P14 -41.9 2,049
DNQ 🇫🇷 O.Grouillard 0 0 1 P24 -54.0 2,062
DNQ 🇫🇷 P.Raphanel 0 0 0 P37 +24.2 1,737
DNQ 🇩🇪 C.Danner 0 0 3 P20 -21.0 1,908
DNQ 🇫🇷 Y.Dalmas 0 0 0 P39 +6.7 1,758
DNQ 🇫🇮 J.Järvilehto 0 0 0 P42 -48.8 1,951
DNQ 🇮🇹 P.Ghinzani 0 0 0 P38 -7.9 1,762
DNQ 🇦🇷 O.Larrauri 0 0 0 P43 -7.7 1,723
DNQ 🇮🇹 G.Tarquini 0 0 1 P25 -35.8 1,824
DNQ 🇮🇹 N.Larini 0 0 0 P33 -52.9 1,862
DNQ 🇯🇵 A.Suzuki 0 0 0 P45 -11.0 1,610
DNQ 🇩🇪 B.Schneider 0 0 0 P36 -25.3 1,665
DNQ 🇮🇹 E.Bertaggia 0 0 0 P46 -55.9 1,787

Qualifying results are not available for this race.

Elo Changes