Round 14 · 1973

Mosport International Raceway

Ontario, Canada · September 23, 1973 · Circuit History · Wikipedia

The race, in perspective

Race debrief

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

R141973
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26 stored results 26/26 Elo snapshots 26/26 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
P. RevsonMcLaren #42235 No error range P1 Not assessedQualifying unavailable
E. FittipaldiTeam Lotus #52227 No error range P2 Not assessedQualifying unavailable
J. OliverShadow #241962 No error range P3 Not assessedQualifying unavailable
J. BeltoiseBRM #112097 No error range P4 Not assessedQualifying unavailable
J. StewartTyrrell #12447 No error range P5 Not assessedQualifying unavailable
H. GanleyIso Marlboro #102098 No error range P6 Not assessedQualifying unavailable
J. HuntMarch #172039 No error range P7 Not assessedQualifying unavailable
C. ReutemannBrabham #72200 No error range P8 Not assessedQualifying unavailable
M. HailwoodSurtees #122088 No error range P9 Not assessedQualifying unavailable
C. AmonTyrrell #152048 No error range P10 Not assessedQualifying unavailable
W. FittipaldiBrabham #191997 No error range P11 Not assessedQualifying unavailable
R. StommelenBrabham #162039 No error range P12 Not assessedQualifying unavailable
D. HulmeMcLaren #62208 No error range P13 Not assessedQualifying unavailable
T. SchenkenIso Marlboro #221968 No error range P14 Not assessedQualifying unavailable
A. MerzarioFerrari #92110 No error range P15 Not assessedQualifying unavailable
G. HillShadow #132056 No error range P16 Not assessedQualifying unavailable
G. FollmerShadow #182012 No error range P17 Not assessedQualifying unavailable
C. PaceSurtees #82124 No error range P18 Not assessedQualifying unavailable
J. JarierMarch #231966 No error range NCNot classified Not assessedQualifying unavailable
R. von OpelEnsign #261942 No error range NCNot classified Not assessedQualifying unavailable
N. LaudaBRM #201994 No error range DNFTransmission Not assessedQualifying unavailable
J. ScheckterMcLaren #142049 No error range DNFAccident Not assessedQualifying unavailable
F. CevertTyrrell #22313 No error range DNFAccident Not assessedQualifying unavailable
M. BeuttlerMarch #251942 No error range DNFEngine Not assessedQualifying unavailable
R. PetersonTeam Lotus #32300 No error range DNFSuspension Not assessedQualifying unavailable
P. GethinBRM #211970 No error range DNFOil pump 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

Oliver+112.5 Elo

Largest grid-to-finish gain

Ganley+16 places

The bigger picture

Championship after this round

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

  1. 1 Stewart 71pts 0
  2. 2 Fittipaldi 54pts 0
  3. 3 Cevert 47pts 0
  4. 4 Peterson 43pts 0
  5. 5 Revson 36pts 0

Movement since round 13. 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.

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 (Stewart)
8
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇺🇸 P.Revson 2 +1 +9 36 P5 +60.5 2,295
P2 🇧🇷 E.Fittipaldi 5 +3 +6 54 P2 +54.5 2,282
P3 🇬🇧 J.Oliver 14 +11 +4 4 P14 +112.5 2,075
P4 🇫🇷 J.Beltoise 16 +12 +3 9 P9 +71.0 2,168
P5 🇬🇧 J.Stewart 9 +4 +2 71 P1 -7.1 2,440
P6 🇳🇿 H.Ganley 22 +16 +1 1 P19 +55.2 2,153
P7 🇬🇧 J.Hunt 15 +8 0 8 P10 +62.7 2,102
P8 🇦🇷 C.Reutemann 4 -4 0 12 P7 +14.6 2,215
P9 🇬🇧 M.Hailwood 12 +3 0 0 P22 +34.9 2,123
P10 🇳🇿 C.Amon 11 +1 0 1 P21 +37.4 2,085
P11 🇧🇷 W.Fittipaldi 10 -1 0 3 P16 +42.6 2,040
P12 🇩🇪 R.Stommelen 18 +6 0 0 P30 +24.3 2,063
P13 🇳🇿 D.Hulme 7 -6 0 23 P6 -25.6 2,183
P14 🇦🇺 T.Schenken 24 +10 0 0 P33 +26.6 1,995
P15 🇮🇹 A.Merzario 20 +5 0 6 P12 -16.9 2,093
P16 🇬🇧 G.Hill 17 +1 0 0 P26 -10.7 2,045
P17 🇺🇸 G.Follmer 13 -4 0 5 P13 -7.1 2,004
P18 🇧🇷 C.Pace 19 +1 0 7 P11 -43.5 2,081
NC 🇫🇷 J.Jarier 23 0 0 P34 -11.4 1,955
NC 🇱🇮 R.von Opel 26 0 0 P32 -13.5 1,929
DNF 🇦🇹 N.Lauda 8 0 2 P17 -33.5 1,960
DNF 🇿🇦 J.Scheckter 3 0 0 P29 -55.1 1,994
DNF 🇫🇷 F.Cevert 6 0 47 P3 -124.5 2,189
DNF 🇬🇧 M.Beuttler 21 0 0 P23 -44.2 1,898
DNF 🇸🇪 R.Peterson 1 0 43 P4 -137.4 2,163
DNF 🇬🇧 P.Gethin 25 0 0 P41 -66.0 1,904

Qualifying results are not available for this race.

Elo Changes