Official NHA Assessment

Race 6: TABGOLD DERBY (Grade 3) (For Horses at Weight For Age + Penalties)

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Line Horse
Cape Eagle
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 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    Future Pearl         2    60.0    1    0.00     0.0   116   106          106   -10
2    Aragosta             3    59.0    2    1.00     3.0   118   103          108   -10
3    One Way Traffic      4    59.0    3    2.10     1.0   108   106          106   -2
4    Zeus                 3    59.0    4    2.15     3.0   122   102          112   -10
5    Shoot The Rapids     4    56.0    5    3.05     1.0   89    99           99    +10
6    Cape Eagle           7    59.0    6    4.65     0.0   105   105          105   +0
7    Without Question     5    59.0    7    4.70     0.0   120   105          110   -10
8    Home Of The Brave    2    59.0    8    9.40     0.0   95    104          104   +9
9    Policy Of Truth      2    56.0    9    18.60    0.0   82    98           98    +16
10   Future Saint         4    56.0    10   26.70    1.0   83    96           96    +13
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Future Pearl 116 114 106 +8 0.0 -
2 Aragosta 118 109 108 +1 3.0 -
3 One Way Traffic 108 109 106 +3 1.0 -
4 Zeus 122 117 112 +5 3.0 -
5 Shoot The Rapids 89 117 99 +18 1.0 -
6 Cape Eagle Line 105 106 105 +1 0.0
7 Without Question 120 111 110 +1 0.0 -
8 Home Of The Brave 95 97 104 -7 0.0 -
9 Policy Of Truth 82 71 98 -27 0.0 -
10 Future Saint 83 53 96 -43 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