Official NHA Assessment

Race 1: MAIDEN PLATE (3 year olds) (3 year old maidens)

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Line Horse
Elmhurst
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
3 / 5
Within 2 points
Significant Diffs
2 / 5
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    Testify              2    60.0    1    0.00     5.0   67    58           58    -9
2    Walking Thru Time    3    57.5    2    0.50     7.5   -     48           48    +48
3    Elmhurst             2    60.0    3    2.00     5.0   58    58           58    +0
4    Montanna Bay         2    57.5    4    3.25     5.0   51    53           53    +2
5    Red Top              5    60.0    5    10.25    0.0   -     68           68    +68
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Testify 67 71 58 +13 5.0 -
2 Walking Thru Time - 73 48 +25 7.5 -
3 Elmhurst Line 58 56 58 -2 5.0
4 Montanna Bay 51 51 53 -2 5.0 -
5 Red Top - 70 68 +2 0.0 -
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