Round 9 · 1984

Fair Park

Dallas, USA · July 08, 1984 · Circuit History · Wikipedia

The race, in perspective

Race debrief

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

R091984
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26 stored results 26/26 Elo snapshots 25/26 numbered grid slots 0/26 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.

0/26 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.

0/26 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 → P26vs expectedReading
K. RosbergWilliams #72202 No error range P1 Not assessedQualifying unavailable
R. ArnouxFerrari #42244 No error range P2 Not assessedQualifying unavailable
E. de AngelisTeam Lotus #22370 No error range P3 Not assessedQualifying unavailable
J. LaffiteWilliams #132113 No error range P4 Not assessedQualifying unavailable
P. GhinzaniOsella #251929 No error range P5 Not assessedQualifying unavailable
N. MansellTeam Lotus #92162 No error range DNFGearbox Not assessedQualifying unavailable
C. FabiBrabham #231986 No error range P7 Not assessedQualifying unavailable
M. WinkelhockATS #211998 No error range P8 Not assessedQualifying unavailable
N. LaudaMcLaren #52233 No error range DNFSpun off Not assessedQualifying unavailable
A. ProstMcLaren #12395 No error range DNFSpun off Not assessedQualifying unavailable
T. BoutsenArrows #162074 No error range DNFSpun off Not assessedQualifying unavailable
M. AlboretoFerrari #112119 No error range DNFSpun off Not assessedQualifying unavailable
M. SurerArrows #202019 No error range DNFSpun off Not assessedQualifying unavailable
A. SennaToleman #142112 No error range DNFClutch Not assessedQualifying unavailable
J. PalmerRAM #221994 No error range DNFElectrical Not assessedQualifying unavailable
N. PiquetBrabham #32279 No error range DNFSpun off Not assessedQualifying unavailable
P. TambayRenault #82170 No error range DNFSpun off Not assessedQualifying unavailable
J. CecottoToleman #182026 No error range DNFSpun off Not assessedQualifying unavailable
A. de CesarisLigier #122116 No error range DNFSpun off Not assessedQualifying unavailable
H. RothengatterSpirit #241946 No error range DNFFuel leak Not assessedQualifying unavailable
R. PatreseAlfa Romeo #192019 No error range DNFSpun off Not assessedQualifying unavailable
D. WarwickRenault #62215 No error range DNFSpun off Not assessedQualifying unavailable
S. BellofTyrrell #152104 No error range DSQDisqualified Not assessedQualifying unavailable
E. CheeverAlfa Romeo #172071 No error range DNFSpun off Not assessedQualifying unavailable
F. HesnaultLigier #261922 No error range DNFAccident Not assessedQualifying unavailable
M. BrundleTyrrell #102147 Grid unnumbered No error range DNQDid not qualify 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 loss

Brundle−98.4 Elo

Largest grid-to-finish gain

Laffite+20 places

The bigger picture

Championship after this round

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

  1. 1 Prost 35.5pts 0
  2. 2 de Angelis 26pts +1
  3. 3 Lauda 24pts −1
  4. 4 Arnoux 23pts +1
  5. 5 Rosberg 20.5pts +2

Movement since round 8. 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.

Brabham

FabiP7+76.4 Elo
PiquetDNF−56.0 Elo

Non-finish recorded; no finishing gap comparison.

McLaren

LaudaDNF+4.1 Elo
ProstDNF−33.2 Elo

Non-finish recorded; no finishing gap comparison.

Arrows

BoutsenDNF+27.2 Elo
SurerDNF+25.7 Elo

Non-finish recorded; no finishing gap comparison.

Toleman

SennaDNF−3.5 Elo
CecottoDNF−11.9 Elo

Non-finish recorded; no finishing gap comparison.

Renault

TambayDNF−39.2 Elo
WarwickDNF−85.4 Elo

Non-finish recorded; no finishing gap comparison.

Tyrrell

BellofDSQ−66.5 Elo
BrundleDNQ−98.4 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 →
26
Result Entries
Avg Elo
Highest Elo (de Angelis)
19
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇫🇮 K.Rosberg 8 +7 +9 20.5 P5 +68.8 2,270
P2 🇫🇷 R.Arnoux 4 +2 +6 23 P4 +52.1 2,296
P3 🇮🇹 E.de Angelis 2 -1 +4 26 P2 +21.1 2,391
P4 🇫🇷 J.Laffite 24 +20 +3 5 P12 +68.3 2,181
P5 🇮🇹 P.Ghinzani 18 +13 +2 2 P18 +102.7 2,032
DNF 🇬🇧 N.Mansell 1 +1 6 P10 +42.1 2,204
P7 🇮🇹 C.Fabi 11 +4 0 0 P20 +76.4 2,062
P8 🇩🇪 M.Winkelhock 13 +5 0 0 P22 +66.4 2,065
DNF 🇦🇹 N.Lauda 5 0 24 P3 +4.1 2,237
DNF 🇫🇷 A.Prost 7 0 35.5 P1 -33.2 2,361
DNF 🇧🇪 T.Boutsen 20 0 3 P17 +27.2 2,101
DNF 🇮🇹 M.Alboreto 9 0 9.5 P8 +9.1 2,128
DNF 🇨🇭 M.Surer 22 0 0 P19 +25.7 2,045
DNF 🇧🇷 A.Senna 6 0 5 P11 -3.5 2,108
DNF 🇬🇧 J.Palmer 25 0 0 P23 +16.9 2,011
DNF 🇧🇷 N.Piquet 12 0 18 P6 -56.0 2,223
DNF 🇫🇷 P.Tambay 10 0 8 P9 -39.2 2,131
DNF 🇻🇪 J.Cecotto 15 0 0 P24 -11.9 2,014
DNF 🇮🇹 A.de Cesaris 16 0 3 P16 -40.6 2,076
DNF 🇳🇱 H.Rothengatter 23 0 0 P28 -8.6 1,937
DNF 🇮🇹 R.Patrese 21 0 3 P15 -31.9 1,987
DNF 🇬🇧 D.Warwick 3 0 13 P7 -85.4 2,130
DSQ 🇩🇪 S.Bellof 17 0 0 P29 -66.5 2,037
DNF 🇺🇸 E.Cheever 14 0 3 P14 -65.8 2,005
DNF 🇫🇷 F.Hesnault 19 0 0 P26 -39.8 1,882
DNQ 🇬🇧 M.Brundle 0 0 0 P27 -98.4 2,048

Qualifying results are not available for this race.

Elo Changes