Official NHA Assessment

Race 3: RACING240 FOR RACING. FOR YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Prime Example
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
10 / 11
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    Otto Luyken          5    57.0    1    0.00     0.0   -     70           6     +6
2    Prime Example        2    57.0    2    0.10     0.0   70    70           70    +0
3    Gregor Macgregor     4    60.0    3    0.40     5.0   58    71           71    +13
4    Top Sail             2    57.0    4    1.40     0.0   71    73           73    +2
5    Big Guy              3    60.0    5    5.25     9.0   64    58           58    -6
6    Clap Of Thunder      3    60.0    6    6.00     9.0   64    58           58    -6
7    Breeze Over          5    57.0    7    10.00    0.0   -     70           70    +70
8    Bronze Sword         3    57.0    8    10.25    9.0   -     52           52    +52
9    Kalahari Chrome      7    60.0    9    13.00    0.0   53    76           76    +23
10   King Of Venus        4    60.0    10   13.25    5.0   59    66           66    +7
11   Ford Fairlane        2    57.0    11   20.00    0.0   45    70           70    +25
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Otto Luyken - 116 6 +110 0.0 -
2 Prime Example Line 70 93 70 +23 0.0
3 Gregor Macgregor 58 63 71 -8 5.0 -
4 Top Sail 71 85 73 +12 0.0 -
5 Big Guy 64 60 58 +2 9.0 -
6 Clap Of Thunder 64 66 58 +8 9.0 -
7 Breeze Over - 99 70 +29 0.0 -
8 Bronze Sword - 66 52 +14 9.0 -
9 Kalahari Chrome 53 50 76 -26 0.0 -
10 King Of Venus 59 87 66 +21 5.0 -
11 Ford Fairlane 45 41 70 -29 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