Official NHA Assessment

Race 3: MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)

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Line Horse
Assume
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 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    Assume               3    57.5    1    0.00     5.0   53    53           53    +0
2    Regulate             3    60.0    2    0.75     5.0   -     58           58    +58
3    Chetan               3    57.5    3    2.75     5.0   50    53           53    +3
4    Manvir               3    60.0    4    4.25     5.0   -     58           58    +58
5    Ride The Lights      3    57.5    5    4.50     5.0   -     53           53    +53
6    State Your Case      3    60.0    6    5.75     5.0   -     58           58    +58
7    King Magnus          3    56.0    7    8.25     5.0   -     50           50    +50
99   Cosmic Rush          3    56.0    99   0.00     5.0   -     50           50    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Assume Line 53 58 53 +5 5.0
2 Regulate - 79 58 +21 5.0 -
3 Chetan 50 45 53 -8 5.0 -
4 Manvir - 52 58 -6 5.0 -
5 Ride The Lights - 38 53 -15 5.0 -
6 State Your Case - 40 58 -18 5.0 -
7 King Magnus - 22 50 -28 5.0 -
99 Cosmic Rush - 28 50 -22 5.0 -
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