Official NHA Assessment

Race 2: GENUINE ENNION SYNDICATE MAIDEN PLATE (For all Maidens)

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Line Horse
Astronomical Boy
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 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    Astronomical Boy     2    60.0    1    0.00     0.0   -     -            -     +0
2    In Motion            2    60.0    2    1.00     0.0   -     4            4     +4
3    Clark Griswold       3    60.0    3    1.05     8.0   -     -12          -     +0
4    Pritti United        2    60.0    4    1.15     0.0   -     4            4     +4
5    Beware               3    60.0    5    1.45     8.0   -     -13          -     +0
6    Symbolic Gesture     3    60.0    6    4.20     8.0   -     -15          -     +0
7    Green Commander      2    60.0    7    5.95     0.0   75    -            69    -6
8    Ain't No Sunshine    3    60.0    8    9.95     8.0   -     -16          -     +0
9    Frequent Traveller   3    60.0    9    10.45    8.0   -     -16          -     +0
10   Eriks Love           3    60.0    10   11.45    8.0   -     -16          -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Astronomical Boy Line - 87 - +87 0.0
2 In Motion - 82 4 +78 0.0 -
3 Clark Griswold - 85 - +85 8.0 -
4 Pritti United - 77 4 +73 0.0 -
5 Beware - 103 - +103 8.0 -
6 Symbolic Gesture - 72 - +72 8.0 -
7 Green Commander 75 71 69 +2 0.0 -
8 Ain't No Sunshine - 62 - +62 8.0 -
9 Frequent Traveller - 72 - +72 8.0 -
10 Eriks Love - 69 - +69 8.0 -
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