Round 4 · 1991

Circuit de Monaco

Monte-Carlo, Monaco · May 12, 1991 · Circuit History · Wikipedia

Kings of this circuit
The race, in perspective

Race debrief

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

R041991
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34 stored results 34/34 Elo snapshots 26/34 numbered grid slots 0/34 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.

0/34 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.

0/34 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 → P34vs expectedReading
A. SennaMcLaren #12475 No error range P1 Not assessedQualifying unavailable
N. MansellWilliams #92207 No error range P2 Not assessedQualifying unavailable
J. AlesiFerrari #112183 No error range P3 Not assessedQualifying unavailable
R. MorenoBenetton #132147 No error range P4 Not assessedQualifying unavailable
A. ProstFerrari #42352 No error range P5 Not assessedQualifying unavailable
E. PirroDallara #252042 No error range P6 Not assessedQualifying unavailable
T. BoutsenLigier #62330 No error range P7 Not assessedQualifying unavailable
B. GachotJordan #321941 No error range P8 Not assessedQualifying unavailable
É. BernardLola #212082 No error range P9 Not assessedQualifying unavailable
É. ComasLigier #202088 No error range P10 Not assessedQualifying unavailable
J. JärvilehtoDallara #152126 No error range P11 Not assessedQualifying unavailable
P. MartiniMinardi #72283 No error range P12 Not assessedQualifying unavailable
M. HäkkinenTeam Lotus #102205 No error range DNFOil leak Not assessedQualifying unavailable
G. MorbidelliMinardi #232073 No error range DNFGearbox Not assessedQualifying unavailable
M. GugelminLeyton House #172122 No error range DNFThrottle Not assessedQualifying unavailable
S. ModenaTyrrell #122159 No error range DNFEngine Not assessedQualifying unavailable
R. PatreseWilliams #52344 No error range DNFSpun off Not assessedQualifying unavailable
M. BlundellBrabham #182117 No error range DNFSpun off Not assessedQualifying unavailable
M. AlboretoFootwork #262005 No error range DNFEngine Not assessedQualifying unavailable
S. NakajimaTyrrell #142131 No error range DNFSpun off Not assessedQualifying unavailable
A. SuzukiLola #192114 No error range DNFEngine Not assessedQualifying unavailable
A. de CesarisJordan #242047 No error range DNFThrottle Not assessedQualifying unavailable
I. CapelliLeyton House #162122 No error range DNFBrakes Not assessedQualifying unavailable
G. TarquiniAGS #311960 No error range DNFGearbox Not assessedQualifying unavailable
G. BergerMcLaren #22396 No error range DNFSpun off Not assessedQualifying unavailable
N. PiquetBenetton #32381 No error range DNFSuspension Not assessedQualifying unavailable
J. BaileyTeam Lotus #301965 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
F. BarbazzaAGS #291965 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
A. CaffiFootwork #271996 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
M. BrundleBrabham #82272 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
N. LariniLambo #222081 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
E. van de PoeleLambo #281992 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
P. ChavesColoni #341833 Grid unnumbered No error range DNQDid not prequalify Not assessedQualifying unavailable
O. GrouillardFondmetal #331866 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

Gachot+105.5 Elo

Largest Elo loss

Brundle−114.7 Elo

Largest grid-to-finish gain

Comas+16 places

The bigger picture

Championship after this round

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

  1. 1 Senna 40pts 0
  2. 2 Prost 11pts +1
  3. 3 Berger 10pts −1
  4. 4 Patrese 6pts 0
  5. 5 Mansell 6pts +21

Movement since round 3. 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

SennaP1+29.0 Elo
BergerDNF−108.8 Elo

Non-finish recorded; no finishing gap comparison.

Benetton

MorenoP4+79.3 Elo
PiquetDNF−112.4 Elo

Non-finish recorded; no finishing gap comparison.

Lola

BernardP9+64.9 Elo
SuzukiDNF−18.6 Elo

Non-finish recorded; no finishing gap comparison.

AGS

TarquiniDNF+1.0 Elo
BarbazzaDNQ−25.2 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 →
34
Result Entries
Avg Elo
Highest Elo (Senna)
22
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇧🇷 A.Senna 1 +10 40 P1 +29.0 2,504
P2 🇬🇧 N.Mansell 5 +3 +6 6 P5 +76.4 2,284
P3 🇫🇷 J.Alesi 9 +6 +4 5 P7 +76.3 2,259
P4 🇧🇷 R.Moreno 8 +4 +3 3 P9 +79.3 2,226
P5 🇫🇷 A.Prost 7 +2 +2 11 P2 +24.8 2,377
P6 🇮🇹 E.Pirro 12 +6 +1 1 P14 +94.0 2,136
P7 🇧🇪 T.Boutsen 16 +9 0 0 P17 +16.7 2,347
P8 🇧🇪 B.Gachot 23 +15 0 0 P19 +105.5 2,047
P9 🇫🇷 É.Bernard 13 +4 0 0 P23 +64.9 2,147
P10 🇫🇷 É.Comas 26 +16 0 0 P25 +57.1 2,145
P11 🇫🇮 J.Järvilehto 21 +10 0 4 P8 +41.0 2,167
P12 🇮🇹 P.Martini 14 +2 0 3 P10 -4.3 2,278
DNF 🇫🇮 M.Häkkinen 25 0 2 P12 +7.9 2,213
DNF 🇮🇹 G.Morbidelli 17 0 0 P20 +35.9 2,109
DNF 🇧🇷 M.Gugelmin 15 0 0 P27 +17.0 2,139
DNF 🇮🇹 S.Modena 2 0 3 P11 +1.1 2,160
DNF 🇮🇹 R.Patrese 3 0 6 P4 -48.7 2,295
DNF 🇬🇧 M.Blundell 19 0 0 P21 -0.6 2,116
DNF 🇮🇹 M.Alboreto 22 0 0 P29 +21.7 2,027
DNF 🇯🇵 S.Nakajima 11 0 2 P13 -16.9 2,115
DNF 🇯🇵 A.Suzuki 20 0 1 P15 -18.6 2,095
DNF 🇮🇹 A.de Cesaris 10 0 0 P28 -7.4 2,039
DNF 🇮🇹 I.Capelli 18 0 0 P30 -33.2 2,089
DNF 🇮🇹 G.Tarquini 24 0 0 P22 +1.0 1,961
DNF 🇦🇹 G.Berger 6 0 10 P3 -108.8 2,287
DNF 🇧🇷 N.Piquet 4 0 6 P6 -112.4 2,268
DNQ 🇬🇧 J.Bailey 0 0 1 P16 -18.8 1,946
DNQ 🇮🇹 F.Barbazza 0 0 0 P32 -25.2 1,940
DNQ 🇮🇹 A.Caffi 0 0 0 P31 -38.7 1,957
DNQ 🇬🇧 M.Brundle 0 0 0 P26 -114.7 2,157
DNQ 🇮🇹 N.Larini 0 0 0 P18 -72.6 2,008
DNQ 🇧🇪 E.van de Poele 0 0 0 P24 -56.6 1,936
DNQ 🇵🇹 P.Chaves 0 0 0 P35 -30.1 1,803
DNQ 🇫🇷 O.Grouillard 0 0 0 P34 -42.1 1,824

Qualifying results are not available for this race.

Elo Changes