Official NHA Assessment

Race 3: 4RACING GOLD RUSH SPRINT (For 3 year-olds - Non-Black Type)

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Line Horse
Wind Water
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 8
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    Mercantour           5    60.0    1    0.00     0.0   103   110          109   +6
2    Wind Water           3    53.5    2    3.00     3.5   90    90           90    +0
3    Trompie              2    58.0    3    4.25     2.5   99    101          101   +2
4    Miss Daisy           2    62.5    4    4.75     2.5   108   110          110   +2
5    Mover And Shaker     5    57.0    5    5.25     0.0   97    104          104   +7
6    Raffles              2    57.0    6    5.75     2.5   97    99           99    +2
7    Texas Red            5    55.5    7    13.00    0.0   94    101          101   +7
99   Umthombo Wolwazi     2    54.0    99   0.00     2.5   -     93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mercantour 103 113 109 +4 0.0 -
2 Wind Water Line 90 89 90 -1 3.5
3 Trompie 99 107 101 +6 2.5 -
4 Miss Daisy 108 108 110 -2 2.5 -
5 Mover And Shaker 97 109 104 +5 0.0 -
6 Raffles 97 105 99 +6 2.5 -
7 Texas Red 94 119 101 +18 0.0 -
99 Umthombo Wolwazi - 91 93 -2 2.5 -
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