Official NHA Assessment

Race 2: 4RACING APP WORK RIDERS MAIDEN PLATE (For all Maidens)

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Line Horse
Hammer Blow
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 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    Gunboat              3    60.0    1    0.00     2.5   72    74           74    +2
2    Hammer Blow          3    60.0    2    2.00     2.5   74    74           74    +0
3    Mfulathela           2    57.0    3    7.40     1.5   -     70           70    +70
4    Buffalo King Cody    2    57.0    4    9.10     1.5   -     70           70    +70
5    Second To Nunn       2    60.0    5    9.30     1.5   71    76           76    +5
6    Autograph            2    57.0    6    13.55    1.5   -     70           70    +70
7    Turbo Tiger          2    60.0    7    13.80    1.5   54    76           76    +22
8    Ringho               4    60.0    8    15.30    0.0   60    79           79    +19
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gunboat 72 74 74 ✓ Match 2.5 -
2 Hammer Blow Line 74 72 74 -2 2.5
3 Mfulathela - - 70 - 1.5 -
4 Buffalo King Cody - - 70 - 1.5 -
5 Second To Nunn 71 69 76 -7 1.5 -
6 Autograph - - 70 - 1.5 -
7 Turbo Tiger 54 52 76 -24 1.5 -
8 Ringho 60 60 79 -19 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