Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
In A Blue Moon
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
5 / 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    Irish Love           4    60.0    1    0.00     1.0   74    68           68    -6
2    Pike Place           3    60.0    2    0.50     2.5   63    70           70    +7
3    In A Blue Moon       2    60.0    3    2.75     0.0   72    72           72    +0
4    Oklahoma Twister     4    60.0    4    4.50     1.0   64    68           68    +4
5    Under The Rainbow    3    60.0    5    8.00     2.5   -     65           65    +65
6    Three Bells          3    57.5    6    11.50    2.5   48    60           60    +12
7    Silver Marmalade     3    60.0    7    23.75    2.5   -     65           65    +65
99   Royal Albert         3    60.0    99   0.00     2.5   -     65           65    +0
99   Trombettista         2    60.0    99   0.00     0.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Irish Love 74 67 68 -1 1.0 -
2 Pike Place 63 57 70 -13 2.5 -
3 In A Blue Moon Line 72 74 72 +2 0.0
4 Oklahoma Twister 64 71 68 +3 1.0 -
5 Under The Rainbow - 64 65 -1 2.5 -
6 Three Bells 48 43 60 -17 2.5 -
7 Silver Marmalade - - 65 -65 2.5 -
99 Royal Albert - 56 65 -9 2.5 -
99 Trombettista - 63 70 -7 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