Official NHA Assessment

Race 3: RACEHORSE OWNERS ASSOCIATION MAIDEN JUVENILE PLATE (For 2 year-old)

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Line Horse
Horsey
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
11 / 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    Zatara Magic         5    60.0    1    0.00     0.0   -     1            1     +1
2    Russian Empire       5    58.5    2    3.50     0.0   -     -2           -     +0
3    Rafiki               2    60.0    3    4.50     0.5   -     -            -     +0
4    Horsey               2    60.0    4    5.00     0.5   -     -            -     +0
5    Bold As Brass        2    60.0    5    7.75     0.5   -     -            -     +0
6    Dammi                2    60.0    6    7.85     0.5   -     -            -     +0
7    Siberian Fox         2    60.0    7    10.35    0.5   -     -            -     +0
8    Le Bonheur           2    60.0    8    13.60    0.5   -     -            -     +0
9    Davey Crockett       2    56.0    9    13.70    0.5   -     -8           -     +0
10   The Last Belle       2    60.0    10   15.95    0.5   -     -            -     +0
11   Flying Asterix       2    60.0    11   17.95    0.5   -     -            -     +0
99   This Time Round      2    60.0    99   0.00     0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Zatara Magic - 114 1 +113 0.0 -
2 Russian Empire - 53 - +53 0.0 -
3 Rafiki - 67 - +67 0.5 -
4 Horsey Line - 71 - +71 0.5
5 Bold As Brass - 44 - +44 0.5 -
6 Dammi - 55 - +55 0.5 -
7 Siberian Fox - 62 - +62 0.5 -
8 Le Bonheur - 60 - +60 0.5 -
9 Davey Crockett - 50 - +50 0.5 -
10 The Last Belle - 59 - +59 0.5 -
11 Flying Asterix - 61 - +61 0.5 -
99 This Time Round - 54 - - 0.5 -
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