Official NHA Assessment

Race 1: BETWAY WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Elusive Rocket
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 9
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    Dhanteras            3    60.0    1    0.00     5.0   -     58           6     +6
2    Sacred Valley        3    60.0    2    3.75     5.0   53    59           59    +6
3    Midfield Girl        3    60.0    3    4.25     5.0   57    59           59    +2
4    Miss Otis            3    60.0    4    5.25     5.0   72    58           62    -10
5    Elusive Rocket       3    60.0    5    7.25     5.0   58    58           58    +0
6    Generous Apache      3    60.5    6    8.00     5.0   -     59           59    +59
7    Queen's Navy         3    60.0    7    14.00    5.0   53    58           58    +5
8    Mon Tresor           3    60.0    8    16.25    5.0   -     58           58    +58
9    All The Roses        3    60.0    9    99.99    5.0   -     58           58    +58
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dhanteras - 67 6 +61 5.0 -
2 Sacred Valley 53 44 59 -15 5.0 -
3 Midfield Girl 57 59 59 ✓ Match 5.0 -
4 Miss Otis 72 59 62 -3 5.0 -
5 Elusive Rocket Line 58 55 58 -3 5.0
6 Generous Apache - 51 59 -8 5.0 -
7 Queen's Navy 53 50 58 -8 5.0 -
8 Mon Tresor - 71 58 +13 5.0 -
9 All The Roses - 20 58 -38 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