Official NHA Assessment

Race 6: GOLD CUP SPRINT (Grade 3) (Open)

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Line Horse
Jubilee
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
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    Jet Mirage           3    57.0    1    0.00     6.0   96    84           84    -12
2    Brianna              4    60.5    2    0.75     7.0   103   89           93    -10
3    Jubilee              7    53.5    3    1.50     0.0   89    89           89    +0
4    Abayyaan             3    54.5    4    3.25     6.0   91    79           81    -10
5    Only Him             4    56.5    5    6.75     7.0   95    81           85    -10
6    Wantage              8    56.5    6    7.50     0.0   95    95           95    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jet Mirage 96 100 84 +16 6.0 -
2 Brianna 103 103 93 +10 7.0 -
3 Jubilee Line 89 72 89 -17 0.0
4 Abayyaan 91 94 81 +13 6.0 -
5 Only Him 95 87 85 +2 7.0 -
6 Wantage 95 78 95 -17 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