Official NHA Assessment

Race 3: THE ORIGINAL BILTONG STEAK MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
I've Got Wings
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
9 / 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    Tabatha Cat          2    60.0    1    0.00     4.0   68    62           62    -6
2    Fortune Bay          3    60.0    2    0.90     6.0   78    58           68    -10
3    I've Got Wings       2    60.0    3    2.50     4.0   62    62           62    +0
4    Dapperfontein        2    57.5    4    3.70     4.0   60    57           57    -3
5    St Cloud             3    60.0    5    9.60     6.0   -     58           58    +58
6    Williams Princess    3    60.0    6    9.90     6.0   -     58           58    +58
7    Chessade             3    60.0    7    13.30    6.0   35    58           58    +23
8    Royal Debutant       3    60.0    8    19.20    6.0   -     58           58    +58
99   Rock N Roll Girl     2    60.0    99   0.00     4.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tabatha Cat 68 50 62 -12 4.0 -
2 Fortune Bay 78 62 68 -6 6.0 -
3 I've Got Wings Line 62 68 62 +6 4.0
4 Dapperfontein 60 47 57 -10 4.0 -
5 St Cloud - 73 58 +15 6.0 -
6 Williams Princess - 33 58 -25 6.0 -
7 Chessade 35 36 58 -22 6.0 -
8 Royal Debutant - - 58 -58 6.0 -
99 Rock N Roll Girl - 76 62 +14 4.0 -
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