Official NHA Assessment

Race 2: CAPE RACING SALES RESTRICTED MAIDEN PLATE (For 3 year olds)

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Line Horse
Speed Racer
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
6 / 8
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    Lindbergh            2    60.0    1    0.00     0.0   82    86           86    +4
2    Speed Racer          4    60.0    2    2.25     3.5   82    82           82    +0
3    Noon Day Gun         4    60.0    3    2.55     3.5   81    81           81    +0
4    Ozark                4    60.0    4    4.55     3.5   79    79           79    +0
5    Stars In Heaven      2    60.0    5    5.80     0.0   83    86           86    +3
6    Claw                 4    60.0    6    6.30     3.5   -     79           79    +79
7    Guarding The Wall    4    60.0    7    6.50     3.5   83    79           79    -4
99   Petteia              2    60.0    99   0.00     0.0   -     86           86    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lindbergh 82 85 86 -1 0.0 -
2 Speed Racer Line 82 88 82 +6 3.5
3 Noon Day Gun 81 66 81 -15 3.5 -
4 Ozark 79 61 79 -18 3.5 -
5 Stars In Heaven 83 87 86 +1 0.0 -
6 Claw - 91 79 +12 3.5 -
7 Guarding The Wall 83 67 79 -12 3.5 -
99 Petteia - 50 86 -36 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