Official NHA Assessment

Race 7: SplashOut CAPE DERBY (Grade 1) (For 3-year-olds)

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Line Horse
Eight On Eighteen
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
4 / 7
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    Eight On Eighteen    2    60.0    1    0.00     0.0   127   127          127   +0
2    Sail The Seas        2    60.0    2    1.50     0.0   103   132          132   +29
3    Garrix               3    60.0    3    3.75     5.0   97    119          119   +22
4    Native Ruler         3    60.0    4    5.75     5.0   91    117          117   +26
5    Zeitz                3    60.0    5    12.25    5.0   97    117          117   +20
6    Dawn Till Dusk       2    60.0    6    22.25    0.0   93    127          127   +34
7    Express Yourself     2    60.0    7    29.25    0.0   86    127          127   +41
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Eight On Eighteen Line 127 129 127 +2 0.0
2 Sail The Seas 103 127 132 -5 0.0 -
3 Garrix 97 123 119 +4 5.0 -
4 Native Ruler 91 123 117 +6 5.0 -
5 Zeitz 97 104 117 -13 5.0 -
6 Dawn Till Dusk 93 94 127 -33 0.0 -
7 Express Yourself 86 74 127 -53 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