Official NHA Assessment

Race 8: RIDGEMONT GARDEN PROVINCE STAKES (Grade 1) (Fillies and Mares at Weight-For-Age)

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Line Horse
Double Grand Slam
Reference for assessment
Exact Matches
2 / 14
Calculated = Official
Close Matches
3 / 14
Within 2 points
Significant Diffs
9 / 14
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    Double Grand Slam    2    60.0    1    0.00     0.0   122   122          122   +0
2    Mon Petit Cherie     2    59.0    2    0.80     0.0   113   124          124   +11
3    Rascova              2    60.0    3    2.20     0.0   122   125          125   +3
4    Just Be Lekker       4    60.0    4    3.00     0.5   109   123          123   +14
5    Spumante Dolce       3    59.0    5    4.40     1.0   117   118          118   +1
6    Vj's Angel           3    59.0    6    4.70     1.0   116   118          118   +2
7    Asiye Phambili       3    60.0    7    5.10     1.0   116   120          120   +4
8    Beating Wings        4    60.0    8    5.35     0.5   113   121          121   +8
9    Scarlet Macaw        2    59.0    9    5.45     0.0   110   120          120   +10
10   Callmegetrix         4    60.0    10   5.95     0.5   108   121          121   +13
11   White Pearl          4    60.0    11   6.25     0.5   114   121          121   +7
12   Minogue              4    60.0    12   7.05     0.5   108   121          121   +13
13   Fatal Flaw           3    59.0    13   15.35    1.0   120   118          118   -2
99   Green Sapphire       3    59.0    99   0.00     1.0   -     118          118   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Double Grand Slam Line 122 122 122 ✓ Match 0.0
2 Mon Petit Cherie 113 118 124 -6 0.0 -
3 Rascova 122 122 125 -3 0.0 -
4 Just Be Lekker 109 113 123 -10 0.5 -
5 Spumante Dolce 117 112 118 -6 1.0 -
6 Vj's Angel 116 114 118 -4 1.0 -
7 Asiye Phambili 116 119 120 -1 1.0 -
8 Beating Wings 113 112 121 -9 0.5 -
9 Scarlet Macaw 110 107 120 -13 0.0 -
10 Callmegetrix 108 113 121 -8 0.5 -
11 White Pearl 114 114 121 -7 0.5 -
12 Minogue 108 112 121 -9 0.5 -
13 Fatal Flaw 120 118 118 ✓ Match 1.0 -
99 Green Sapphire - 109 118 -9 1.0 -
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