Round 13 · 1973

Autodromo Nazionale di Monza

Monza, Italy · September 09, 1973 · Circuit History · Wikipedia

Kings of this circuit
The race, in perspective

Race debrief

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

R131973
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25 stored results 25/25 Elo snapshots 24/25 numbered grid slots 0/25 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.

0/25 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.

0/25 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 → P25vs expectedReading
R. PetersonTeam Lotus #42236 No error range P1 Not assessedQualifying unavailable
E. FittipaldiTeam Lotus #112151 No error range P2 Not assessedQualifying unavailable
P. RevsonMcLaren #82171 No error range P3 Not assessedQualifying unavailable
J. StewartTyrrell #12445 No error range P4 Not assessedQualifying unavailable
F. CevertTyrrell #22293 No error range P5 Not assessedQualifying unavailable
C. ReutemannBrabham #92157 No error range P6 Not assessedQualifying unavailable
M. HailwoodSurtees #182017 No error range P7 Not assessedQualifying unavailable
J. IckxFerrari #52232 No error range P8 Not assessedQualifying unavailable
D. PurleyMarch #241905 No error range P9 Not assessedQualifying unavailable
G. FollmerShadow #221949 No error range P10 Not assessedQualifying unavailable
J. OliverShadow #251897 No error range P11 Not assessedQualifying unavailable
R. StommelenBrabham #202005 No error range P12 Not assessedQualifying unavailable
J. BeltoiseBRM #152091 No error range P13 Not assessedQualifying unavailable
G. HillShadow #172048 No error range P14 Not assessedQualifying unavailable
D. HulmeMcLaren #32259 No error range P15 Not assessedQualifying unavailable
H. GanleyIso Marlboro #142125 No error range NCNot classified Not assessedQualifying unavailable
M. BeuttlerMarch #231931 No error range DNFGearbox Not assessedQualifying unavailable
N. LaudaBRM #192007 No error range DNFAccident Not assessedQualifying unavailable
C. RegazzoniBRM #122148 No error range DNFIgnition Not assessedQualifying unavailable
C. PaceSurtees #72201 No error range DNFTyre Not assessedQualifying unavailable
G. van LennepIso Marlboro #102155 No error range DNFOverheating Not assessedQualifying unavailable
R. von OpelEnsign #211981 No error range DNFOverheating Not assessedQualifying unavailable
W. FittipaldiBrabham #162063 No error range DNFBrakes Not assessedQualifying unavailable
A. MerzarioFerrari #62223 No error range DNFSuspension Not assessedQualifying unavailable
J. HuntMarch #132140 Grid unnumbered No error range DNFAccident 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

Purley+79.3 Elo

Largest grid-to-finish gain

Purley+15 places

The bigger picture

Championship after this round

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

  1. 1 Stewart 69pts 0
  2. 2 Fittipaldi 48pts +1
  3. 3 Cevert 47pts −1
  4. 4 Peterson 43pts 0
  5. 5 Revson 27pts 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.

Surtees

HailwoodP7+70.3 Elo
PaceDNF−76.7 Elo

Non-finish recorded; no finishing gap comparison.

Ferrari

IckxP8+10.1 Elo
MerzarioDNF−113.3 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 →
25
Result Entries
Avg Elo
Highest Elo (Stewart)
10
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇸🇪 R.Peterson 1 +9 43 P4 +64.0 2,300
P2 🇧🇷 E.Fittipaldi 4 +2 +6 48 P2 +76.6 2,227
P3 🇺🇸 P.Revson 2 -1 +4 27 P5 +63.7 2,235
P4 🇬🇧 J.Stewart 6 +2 +3 69 P1 +2.3 2,447
P5 🇫🇷 F.Cevert 11 +6 +2 47 P3 +20.4 2,313
P6 🇦🇷 C.Reutemann 10 +4 +1 12 P7 +43.8 2,200
P7 🇬🇧 M.Hailwood 8 +1 0 0 P21 +70.3 2,088
P8 🇧🇪 J.Ickx 14 +6 0 12 P8 +10.1 2,242
P9 🇬🇧 D.Purley 24 +15 0 0 P28 +79.3 1,984
P10 🇺🇸 G.Follmer 21 +11 0 5 P13 +62.2 2,012
P11 🇬🇧 J.Oliver 19 +8 0 0 P24 +65.1 1,962
P12 🇩🇪 R.Stommelen 9 -3 0 0 P30 +34.0 2,039
P13 🇫🇷 J.Beltoise 13 0 6 P12 +5.2 2,097
P14 🇬🇧 G.Hill 22 +8 0 0 P26 +8.1 2,056
P15 🇳🇿 D.Hulme 3 -12 0 23 P6 -50.8 2,208
NC 🇳🇿 H.Ganley 20 0 0 P22 -26.7 2,098
DNF 🇬🇧 M.Beuttler 12 0 0 P20 +11.2 1,942
DNF 🇦🇹 N.Lauda 15 0 2 P16 -13.6 1,994
DNF 🇨🇭 C.Regazzoni 18 0 2 P17 -55.9 2,092
DNF 🇧🇷 C.Pace 5 0 7 P10 -76.7 2,124
DNF 🇳🇱 G.van Lennep 23 0 1 P18 -73.3 2,081
DNF 🇱🇮 R.von Opel 17 0 0 P32 -38.9 1,942
DNF 🇧🇷 W.Fittipaldi 16 0 3 P15 -66.2 1,997
DNF 🇮🇹 A.Merzario 7 0 6 P11 -113.3 2,110
DNF 🇬🇧 J.Hunt 0 0 8 P9 -101.0 2,039

Qualifying results are not available for this race.

Elo Changes