Official NHA Assessment

Race 9: AMY MILLER MEMORIAL C STAKES (F & M) (For Fillies & Mares)

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Line Horse
Jou Lekker Ding
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
6 / 10
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    Supreme Fate         3    60.0    1    0.00     5.0   76    72           72    -4
2    Beach Verse          2    60.0    2    0.40     0.0   85    87           87    +2
2    Jou Lekker Ding      3    60.0    2    0.40     5.0   77    77           77    +0
4    Kattekwaadkwadraad   3    58.5    4    0.45     5.0   84    74           74    -10
5    Innerbloom           3    58.5    5    3.70     5.0   82    70           72    -10
6    Englefield Green     2    61.5    6    4.95     0.0   79    85           85    +6
7    William's Woman      3    54.5    7    5.35     5.0   82    61           72    -10
8    Midnight Lady        3    57.5    8    6.10     5.0   81    67           71    -10
9    La Landonne          2    57.0    9    8.35     0.0   80    76           76    -4
99   Act Of Grace         2    58.5    99   0.00     0.0   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Supreme Fate 76 78 72 +6 5.0 -
2 Beach Verse 85 97 87 +10 0.0 -
2 Jou Lekker Ding Line 77 80 77 +3 5.0
4 Kattekwaadkwadraad 84 87 74 +13 5.0 -
5 Innerbloom 82 74 72 +2 5.0 -
6 Englefield Green 79 77 85 -8 0.0 -
7 William's Woman 82 71 72 -1 5.0 -
8 Midnight Lady 81 80 71 +9 5.0 -
9 La Landonne 80 83 76 +7 0.0 -
99 Act Of Grace - 81 79 +2 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