Official NHA Assessment

Race 3: RACING TODAY OPEN MAIDEN (F & M) (For all Maiden F&M)

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Line Horse
Ruby Claire
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
7 / 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    Dancing In Winter    4    56.0    1    0.00     0.5   63    62           62    -1
2    Ruby Claire          3    56.5    2    2.25     0.5   66    66           66    +0
3    Night In Japan       3    55.5    3    3.00     0.5   64    63           63    -1
4    Physiologus          2    61.0    4    6.25     0.0   -     73           73    +73
5    Beach Queen          3    54.0    5    6.50     0.5   69    58           59    -10
6    Amanatto             3    57.0    6    7.00     0.5   67    64           64    -3
7    Duchess Of Seville   4    51.0    7    9.25     0.5   58    52           52    -6
8    Trillion Dreams      5    52.0    8    12.25    0.0   43    55           55    +12
9    Poise Panache        6    52.0    9    16.50    0.0   55    55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dancing In Winter 63 70 62 +8 0.5 -
2 Ruby Claire Line 66 52 66 -14 0.5
3 Night In Japan 64 49 63 -14 0.5 -
4 Physiologus - 53 73 -20 0.0 -
5 Beach Queen 69 66 59 +7 0.5 -
6 Amanatto 67 64 64 ✓ Match 0.5 -
7 Duchess Of Seville 58 53 52 +1 0.5 -
8 Trillion Dreams 43 45 55 -10 0.0 -
9 Poise Panache 55 40 55 -15 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