Official NHA Assessment

Race 1: HOLLYWOODBETS DURBANVILLE WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Amancio
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
4 / 9
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    Groovejet            4    60.0    1    0.00     6.0   76    73           70    -6
2    Happy Days           2    56.0    2    0.50     0.0   79    82           82    +3
3    Amancio              3    60.0    3    1.25     9.5   70    70           70    +0
4    Congressman          4    60.0    4    2.50     6.0   75    75           75    +0
5    Wood World           3    56.0    5    3.00     9.5   79    60           69    -10
6    Dreamalittledream    3    60.0    6    6.25     9.5   -     66           66    +66
7    Heroic Power         3    60.0    7    7.50     9.5   66    66           66    +0
99   Cosmic Rhythm        2    60.0    99   0.00     0.0   -     85           85    +0
99   Black Cherry         2    60.0    99   0.00     0.0   -     85           85    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Groovejet 76 82 70 +12 6.0 -
2 Happy Days 79 81 82 -1 0.0 -
3 Amancio Line 70 68 70 -2 9.5
4 Congressman 75 93 75 +18 6.0 -
5 Wood World 79 74 69 +5 9.5 -
6 Dreamalittledream - 66 66 ✓ Match 9.5 -
7 Heroic Power 66 62 66 -4 9.5 -
99 Cosmic Rhythm - 59 85 -26 0.0 -
99 Black Cherry - 66 85 -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