Round 7 · 1983

Detroit Street Circuit

Detroit, USA · June 05, 1983 · Circuit History · Wikipedia

The race, in perspective

Race debrief

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

R071983
Share this debrief
Preview share card ↗
27 stored results 27/27 Elo snapshots 26/27 numbered grid slots 0/27 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.

0/27 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.

0/27 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 → P27vs expectedReading
M. AlboretoTyrrell #132129 No error range P1 Not assessedQualifying unavailable
K. RosbergWilliams #22398 No error range P2 Not assessedQualifying unavailable
J. WatsonMcLaren #172101 No error range P3 Not assessedQualifying unavailable
N. PiquetBrabham #42343 No error range P4 Not assessedQualifying unavailable
J. LaffiteWilliams #52322 No error range P5 Not assessedQualifying unavailable
N. MansellTeam Lotus #182092 No error range P6 Not assessedQualifying unavailable
T. BoutsenArrows #241963 No error range P7 Not assessedQualifying unavailable
A. ProstRenault #12465 No error range P8 Not assessedQualifying unavailable
B. GiacomelliToleman #162108 No error range P9 Not assessedQualifying unavailable
R. BoeselLigier #112135 No error range P10 Not assessedQualifying unavailable
M. SurerArrows #62300 No error range P11 Not assessedQualifying unavailable
M. BaldiAlfa Romeo #192090 No error range P12 Not assessedQualifying unavailable
N. LaudaMcLaren #122131 No error range DNFSuspension Not assessedQualifying unavailable
R. GuerreroTheodore #261931 No error range NCNot classified Not assessedQualifying unavailable
J. CecottoTheodore #202077 No error range DNFGearbox Not assessedQualifying unavailable
A. de CesarisAlfa Romeo #152112 No error range DNFTurbo Not assessedQualifying unavailable
R. ArnouxFerrari #82217 No error range DNFElectrical Not assessedQualifying unavailable
D. SullivanTyrrell #102174 No error range DNFElectrical Not assessedQualifying unavailable
J. JarierLigier #232029 No error range DNFWheel Not assessedQualifying unavailable
M. WinkelhockATS #222035 No error range DNFCollision Not assessedQualifying unavailable
D. WarwickToleman #142129 No error range DNFEngine Not assessedQualifying unavailable
R. PatreseBrabham #212058 No error range DNFBrakes Not assessedQualifying unavailable
E. de AngelisTeam Lotus #92176 No error range DNFGearbox Not assessedQualifying unavailable
E. CheeverRenault #72230 No error range DNFDistributor Not assessedQualifying unavailable
P. GhinzaniOsella #271784 No error range DNFOverheating Not assessedQualifying unavailable
P. TambayFerrari #32392 No error range DNFEngine Not assessedQualifying unavailable
C. FabiOsella #251947 Grid unnumbered No error range DNSWithdrew 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

Tambay−146.5 Elo

Largest grid-to-finish gain

Watson+18 places

The bigger picture

Championship after this round

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

  1. 1 Prost 28pts 0
  2. 2 Piquet 27pts 0
  3. 3 Tambay 23pts 0
  4. 4 Rosberg 22pts 0
  5. 5 Watson 15pts 0

Movement since round 6. 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

WatsonP3+93.0 Elo
LaudaDNF+10.3 Elo

Non-finish recorded; no finishing gap comparison.

Renault

ProstP8−22.7 Elo
CheeverDNF−97.0 Elo

Non-finish recorded; no finishing gap comparison.

Ligier

BoeselP10+32.0 Elo
JarierDNF−9.8 Elo

Non-finish recorded; no finishing gap comparison.

Ferrari

ArnouxDNF−41.2 Elo
TambayDNF−146.5 Elo

Non-finish recorded; no finishing gap comparison.

Osella

GhinzaniDNF−9.7 Elo
FabiDNS−51.9 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 →
27
Result Entries
Avg Elo
Highest Elo (Prost)
15
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇮🇹 M.Alboreto 6 +5 +9 9 P8 +101.1 2,230
P2 🇫🇮 K.Rosberg 12 +10 +6 22 P4 +33.3 2,431
P3 🇬🇧 J.Watson 21 +18 +4 15 P5 +93.0 2,194
P4 🇧🇷 N.Piquet 2 -2 +3 27 P2 +28.6 2,371
P5 🇫🇷 J.Laffite 20 +15 +2 10 P7 +25.4 2,347
P6 🇬🇧 N.Mansell 14 +8 +1 1 P15 +72.6 2,165
P7 🇧🇪 T.Boutsen 10 +3 0 0 P19 +95.4 2,058
P8 🇫🇷 A.Prost 13 +5 0 28 P1 -22.7 2,442
P9 🇮🇹 B.Giacomelli 17 +8 0 0 P20 +46.2 2,154
P10 🇧🇷 R.Boesel 23 +13 0 0 P18 +32.0 2,166
P11 🇨🇭 M.Surer 5 -6 0 4 P11 -15.3 2,285
P12 🇮🇹 M.Baldi 25 +13 0 1 P14 +28.0 2,118
DNF 🇦🇹 N.Lauda 18 0 10 P6 +10.3 2,141
NC 🇨🇴 R.Guerrero 11 0 0 P27 +49.2 1,980
DNF 🇻🇪 J.Cecotto 26 0 1 P13 +8.6 2,086
DNF 🇮🇹 A.de Cesaris 8 0 0 P25 -7.5 2,104
DNF 🇫🇷 R.Arnoux 1 0 8 P9 -41.2 2,176
DNF 🇺🇸 D.Sullivan 16 0 2 P12 -38.2 2,136
DNF 🇫🇷 J.Jarier 19 0 0 P22 -9.8 2,019
DNF 🇩🇪 M.Winkelhock 22 0 0 P24 -18.8 2,016
DNF 🇬🇧 D.Warwick 9 0 0 P17 -49.4 2,079
DNF 🇮🇹 R.Patrese 15 0 0 P23 -39.4 2,018
DNF 🇮🇹 E.de Angelis 4 0 0 P21 -76.4 2,100
DNF 🇺🇸 E.Cheever 7 0 8 P10 -97.0 2,133
DNF 🇮🇹 P.Ghinzani 24 0 0 P30 -9.7 1,774
DNF 🇫🇷 P.Tambay 3 0 23 P3 -146.5 2,246
DNS 🇮🇹 C.Fabi 0 0 0 P29 -51.9 1,895

Qualifying results are not available for this race.

Elo Changes