Official NHA Assessment

Race 4: RACEHORSE OWNERS ASSOCIATION MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Intro
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
8 / 9
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    Ghostbuster          4    60.0    1    0.00     2.5   62    77           68    +6
2    Aurora Green         3    59.0    2    2.20     5.0   -     73           73    +73
3    Intro                3    59.0    3    2.50     5.0   72    72           72    +0
4    Mattiazo             4    60.0    4    5.10     2.5   -     77           77    +77
5    Bella Boop Boop      3    59.0    5    5.85     5.0   64    70           70    +6
6    Precious Beauty      3    59.0    6    8.55     5.0   -     70           70    +70
7    Flightlight          3    59.0    7    9.15     5.0   -     70           70    +70
8    Gimme A Green Card   3    59.0    8    17.90    5.0   66    70           70    +4
99   Jilted               2    59.0    99   0.00     0.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ghostbuster 62 57 68 -11 2.5 -
2 Aurora Green - 72 73 -1 5.0 -
3 Intro Line 72 66 72 -6 5.0
4 Mattiazo - 69 77 -8 2.5 -
5 Bella Boop Boop 64 58 70 -12 5.0 -
6 Precious Beauty - 60 70 -10 5.0 -
7 Flightlight - 61 70 -9 5.0 -
8 Gimme A Green Card 66 63 70 -7 5.0 -
99 Jilted - 65 80 -15 0.0 -
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