Official NHA Assessment

Race 4: TABGOLD SCORE 6 SCORE 8 SCORE 10 CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 80)

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Line Horse
Spring Kiss
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 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    Plum Pudding         3    61.5    1    0.00     1.5   83    79           79    -4
2    Sign Of Fate         4    60.5    2    0.50     0.5   81    84           84    +3
3    Spring Kiss          3    55.0    3    1.00     1.5   70    70           70    +0
4    Prom Queen           3    59.0    4    1.50     1.5   81    77           77    -4
5    Beautiful Rania      3    52.5    5    1.80     1.5   68    64           64    -4
6    Greenhouse           3    57.0    6    2.90     1.5   77    72           72    -5
7    Fireburst            3    59.0    7    9.10     1.5   81    74           74    -7
8    Meritorious          3    57.5    8    10.30    1.5   78    71           71    -7
9    Zena Rose            3    53.5    9    19.60    1.5   78    63           68    -10
99   One Path             3    57.5    99   0.00     1.5   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Plum Pudding 83 90 79 +11 1.5 -
2 Sign Of Fate 81 74 84 -10 0.5 -
3 Spring Kiss Line 70 64 70 -6 1.5
4 Prom Queen 81 81 77 +4 1.5 -
5 Beautiful Rania 68 72 64 +8 1.5 -
6 Greenhouse 77 73 72 +1 1.5 -
7 Fireburst 81 80 74 +6 1.5 -
8 Meritorious 78 73 71 +2 1.5 -
9 Zena Rose 78 73 68 +5 1.5 -
99 One Path - 76 71 +5 1.5 -
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