Official NHA Assessment

Race 2: NOVICE PLATE (Maidens & 1 time winners)

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Line Horse
Keen Spirit
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
3 / 6
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    57.0    1    0.00     3.0   55    57           57    +2
2    Aneksi               4    56.0    2    0.75     3.5   53    54           54    +1
3    Keen Spirit          3    57.5    3    0.80     3.0   58    58           58    +0
4    Mustatheef           3    60.0    4    8.80     3.0   62    63           63    +1
5    Sweet Opportunity    3    55.0    5    10.05    3.0   55    53           53    -2
6    Val Gardena          5    56.5    6    15.05    0.0   48    62           62    +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Assume 55 58 57 +1 3.0 -
2 Aneksi 53 50 54 -4 3.5 -
3 Keen Spirit Line 58 71 58 +13 3.0
4 Mustatheef 62 42 63 -21 3.0 -
5 Sweet Opportunity 55 52 53 -1 3.0 -
6 Val Gardena 48 39 62 -23 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