Official NHA Assessment

Race 2: GREYVILLE CONVENTION CENTRE CLASS 5 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 70)

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Line Horse
Golden Angel
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
5 / 12
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    Copacabana           4    60.5    1    0.00     3.0   71    75           75    +4
2    Golden Angel         3    59.5    2    0.70     5.0   74    74           74    +0
3    Futano               3    56.5    3    1.20     5.0   63    67           67    +4
4    K M V Retrofit       3    56.5    4    1.70     5.0   71    66           66    -5
5    Nile The Boss        4    52.0    5    2.30     3.0   52    60           60    +8
6    Blind Speed          2    59.5    6    2.90     0.0   69    81           81    +12
7    Fate Decreed         3    52.5    7    3.10     5.0   55    57           57    +2
8    Amafort              3    55.5    8    3.15     5.0   64    63           63    -1
9    Moving In            4    59.5    9    3.45     3.0   74    74           74    +0
10   Oh My Gucci Girl     3    56.5    10   4.15     5.0   63    64           64    +1
11   The Queen Bee        4    52.0    11   4.75     3.0   59    58           58    -1
99   Roy Taking Off       4    53.5    99   0.00     3.0   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Copacabana 71 74 75 -1 3.0 -
2 Golden Angel Line 74 72 74 -2 5.0
3 Futano 63 55 67 -12 5.0 -
4 K M V Retrofit 71 69 66 +3 5.0 -
5 Nile The Boss 52 52 60 -8 3.0 -
6 Blind Speed 69 65 81 -16 0.0 -
7 Fate Decreed 55 54 57 -3 5.0 -
8 Amafort 64 61 63 -2 5.0 -
9 Moving In 74 66 74 -8 3.0 -
10 Oh My Gucci Girl 63 62 64 -2 5.0 -
11 The Queen Bee 59 53 58 -5 3.0 -
99 Roy Taking Off - 54 61 -7 3.0 -
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