Official NHA Assessment

Race 1: MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)

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Line Horse
Apache Gold
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
7 / 7
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    Chetan               3    57.5    1    0.00     3.0   45    56           51    +6
2    Apache Gold          3    60.0    2    2.50     3.0   63    63           63    +0
3    State Your Case      3    60.0    3    8.50     3.0   -     61           61    +61
4    Queen Of Dallas      3    57.0    4    12.00    3.0   56    55           55    -1
5    Cosmic Rush          3    60.0    5    12.75    3.0   42    61           61    +19
99   Ride The Lights      3    57.0    99   0.00     3.0   -     55           55    +0
99   Kitten Chando        3    60.0    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 Chetan 45 45 51 -6 3.0 -
2 Apache Gold Line 63 52 63 -11 3.0
3 State Your Case - 40 61 -21 3.0 -
4 Queen Of Dallas 56 40 55 -15 3.0 -
5 Cosmic Rush 42 28 61 -33 3.0 -
99 Ride The Lights - 38 55 -17 3.0 -
99 Kitten Chando - - 61 -61 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