Official NHA Assessment

Race 2: RACING240 OPEN MAIDEN (F & M) (For all Maiden F&M)

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Line Horse
Desert Cloud
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 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    Opera Verse          4    48.0    1    0.00     12.0  54    43           43    -11
2    Desert Cloud         3    61.0    2    0.05     10.5  72    72           72    +0
2    Amanatto             3    55.0    2    0.05     10.5  60    60           60    +0
4    Darlingbudsofmay     2    52.5    4    0.30     7.0   69    62           62    -7
5    Trillion Dreams      5    52.0    5    5.80     0.0   47    75           75    +28
6    Golden Alexia        3    60.5    6    7.05     10.5  71    71           71    +0
7    Salagadoola          2    49.5    7    7.15     7.0   68    56           58    -10
8    Buddleja             2    53.5    8    7.40     7.0   71    64           64    -7
9    Night In Japan       3    56.5    9    17.40    10.5  63    63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Opera Verse 54 50 43 +7 12.0 -
2 Desert Cloud Line 72 78 72 +6 10.5
2 Amanatto 60 64 60 +4 10.5 -
4 Darlingbudsofmay 69 70 62 +8 7.0 -
5 Trillion Dreams 47 45 75 -30 0.0 -
6 Golden Alexia 71 56 71 -15 10.5 -
7 Salagadoola 68 66 58 +8 7.0 -
8 Buddleja 71 59 64 -5 7.0 -
9 Night In Japan 63 49 63 -14 10.5 -
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