Round 3 · 1975

Kyalami

Midrand, South Africa · March 01, 1975 · Circuit History · Wikipedia

The race, in perspective

Race debrief

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

R031975
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28 stored results 28/28 Elo snapshots 26/28 numbered grid slots 0/28 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.

0/28 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.

0/28 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 → P28vs expectedReading
J. ScheckterTyrrell #152105 No error range P1 Not assessedQualifying unavailable
C. ReutemannBrabham #32346 No error range P2 Not assessedQualifying unavailable
P. DepaillerTyrrell #72227 No error range P3 Not assessedQualifying unavailable
C. PaceBrabham #52305 No error range P4 Not assessedQualifying unavailable
N. LaudaFerrari #62233 No error range P5 Not assessedQualifying unavailable
J. MassMcLaren #92210 No error range P6 Not assessedQualifying unavailable
R. StommelenEmbassy Hill #142123 No error range P7 Not assessedQualifying unavailable
M. DonohuePenske #162102 No error range P8 Not assessedQualifying unavailable
T. PryceShadow-Ford #172085 No error range P9 Not assessedQualifying unavailable
R. PetersonTeam Lotus #112178 No error range P10 Not assessedQualifying unavailable
G. TunmerTeam Lotus #24.52000 No error range P11 Not assessedQualifying unavailable
J. IckxTeam Lotus #102197 No error range P12 Not assessedQualifying unavailable
E. KeizanTeam Lotus #202034 No error range P13 Not assessedQualifying unavailable
D. CharltonMcLaren #281780 No error range P14 Not assessedQualifying unavailable
B. EvansBRM #24.52000 No error range P15 Not assessedQualifying unavailable
C. RegazzoniFerrari #22406 No error range DNFThrottle Not assessedQualifying unavailable
M. AndrettiParnelli #122162 No error range DNFTransmission Not assessedQualifying unavailable
J. LaffiteWilliams #182054 No error range NCNot classified Not assessedQualifying unavailable
E. FittipaldiMcLaren #12447 No error range NCNot classified Not assessedQualifying unavailable
I. ScheckterTyrrell #261977 No error range DNFAccident Not assessedQualifying unavailable
J. HuntHesketh #42329 No error range DNFFuel system Not assessedQualifying unavailable
J. JarierShadow-Ford #192050 No error range DNFOverheating Not assessedQualifying unavailable
L. LombardiMarch #271943 No error range DNFFuel system Not assessedQualifying unavailable
A. MerzarioWilliams #222026 No error range DNFEngine Not assessedQualifying unavailable
J. WatsonSurtees #132154 No error range DNFClutch Not assessedQualifying unavailable
V. BrambillaMarch #232007 No error range DNFRadiator Not assessedQualifying unavailable
W. FittipaldiFittipaldi #212026 Grid unnumbered No error range DNQDid not qualify Not assessedQualifying unavailable
G. HillLola #82220 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

Hill−130.7 Elo

Largest grid-to-finish gain

Tunmer+14 places

The bigger picture

Championship after this round

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

  1. 1 Fittipaldi 15pts 0
  2. 2 Pace 12pts 0
  3. 3 Reutemann 10pts +2
  4. 4 Scheckter 9pts +12
  5. 5 Hunt 7pts −2

Movement since round 2. 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 →
28
Result Entries
Avg Elo
Highest Elo (Reutemann)
13
Non-finishes

Race

Qualifying

# Driver Grid +/- Points Season Pts Season # Elo Change Elo
P1 🇿🇦 J.Scheckter 3 +2 +9 9 P4 +114.2 2,219
P2 🇦🇷 C.Reutemann 2 +6 10 P3 +44.8 2,391
P3 🇫🇷 P.Depailler 5 +2 +4 6 P6 +65.4 2,292
P4 🇧🇷 C.Pace 1 -3 +3 12 P2 +38.2 2,343
P5 🇦🇹 N.Lauda 4 -1 +2 5 P9 +47.9 2,281
P6 🇩🇪 J.Mass 16 +10 +1 5 P8 +46.2 2,256
P7 🇩🇪 R.Stommelen 14 +7 0 0 P11 +61.9 2,185
P8 🇺🇸 M.Donohue 18 +10 0 0 P10 +59.5 2,162
P9 🇬🇧 T.Pryce 19 +10 0 0 P14 +56.3 2,142
P10 🇸🇪 R.Peterson 8 -2 0 0 P17 +23.0 2,201
P11 🇿🇦 G.Tunmer 25 +14 0 0 P20 +63.0 2,063
P12 🇧🇪 J.Ickx 21 +9 0 0 P13 +1.9 2,199
P13 🇿🇦 E.Keizan 22 +9 0 0 P22 +38.4 2,073
P14 🇿🇦 D.Charlton 20 +6 0 0 P23 +83.3 1,863
P15 🇬🇧 B.Evans 24 +9 0 0 P24 +31.3 2,031
DNF 🇨🇭 C.Regazzoni 9 0 6 P7 -77.9 2,328
DNF 🇺🇸 M.Andretti 6 0 0 P12 -28.1 2,134
NC 🇫🇷 J.Laffite 23 0 0 P19 -6.5 2,048
NC 🇧🇷 E.Fittipaldi 11 0 15 P1 -108.8 2,338
DNF 🇿🇦 I.Scheckter 17 0 0 P28 -2.6 1,974
DNF 🇬🇧 J.Hunt 12 0 7 P5 -101.8 2,227
DNF 🇫🇷 J.Jarier 13 0 0 P26 -37.1 2,013
DNF 🇮🇹 L.Lombardi 26 0 0 P29 -18.2 1,924
DNF 🇮🇹 A.Merzario 15 0 0 P25 -46.5 1,979
DNF 🇬🇧 J.Watson 10 0 0 P18 -89.2 2,065
DNF 🇮🇹 V.Brambilla 7 0 0 P15 -57.6 1,950
DNQ 🇧🇷 W.Fittipaldi 0 0 0 P21 -70.5 1,956
DNQ 🇬🇧 G.Hill 0 0 0 P16 -130.7 2,089

Qualifying results are not available for this race.

Elo Changes