Official NHA Assessment

Race 2: BRYANSTON AUCTIONEERS FM 66 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Sahara Dawn
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 7
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Misty Metal          3    59.5    1    0.00     9.5   65    68           65    +0
2    Time For Charity     5    59.5    2    0.20     0.0   65    87           87    +22
3    Sahara Dawn          4    53.0    3    3.00     11.0  52    52           52    +0
4    Princess Lola        2    61.5    4    5.00     6.5   69    78           78    +9
5    Gimme A Storm        3    58.0    5    6.75     9.5   62    65           65    +3
6    Godspeed             2    58.0    6    7.75     6.5   62    71           71    +9
99   Sheets And Goggles   3    59.5    99   0.00     9.5   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Misty Metal 65 71 65 +6 9.5 -
2 Time For Charity 65 61 87 -26 0.0 -
3 Sahara Dawn Line 52 52 52 ✓ Match 11.0
4 Princess Lola 69 60 78 -18 6.5 -
5 Gimme A Storm 62 58 65 -7 9.5 -
6 Godspeed 62 60 71 -11 6.5 -
99 Sheets And Goggles - 63 68 -5 9.5 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points