Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Vintage Crystal
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 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    Vintage Crystal      2    60.0    1    0.00     0.0   61    61           61    +0
2    Elusive Mata         4    60.0    2    0.10     7.0   61    47           51    -10
3    Beijing Boulevard    3    60.0    3    2.35     9.0   50    45           45    -5
4    Elegant Appeal       2    57.0    4    8.60     0.0   60    55           55    -5
5    Alta Lekker          3    60.0    5    10.10    9.0   -     43           43    +43
6    Forest Fantasy       3    60.0    6    25.60    9.0   39    43           43    +4
99   Mad World            3    60.0    99   0.00     9.0   -     43           43    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vintage Crystal Line 61 59 61 -2 0.0
2 Elusive Mata 61 58 51 +7 7.0 -
3 Beijing Boulevard 50 54 45 +9 9.0 -
4 Elegant Appeal 60 65 55 +10 0.0 -
5 Alta Lekker - 41 43 -2 9.0 -
6 Forest Fantasy 39 39 43 -4 9.0 -
99 Mad World - 53 43 +10 9.0 -
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