Official NHA Assessment

Race 2: HAPPY MOTHER'S DAY MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Free Movement
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
6 / 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    Scallywag            2    60.0    1    0.00     0.0   63    80           69    +6
2    Free Movement        3    60.0    2    0.20     2.0   76    76           76    +0
3    American Grayson     3    60.0    3    5.75     2.0   -     76           76    +76
4    Mayor Of Merrivale   2    60.0    4    9.00     0.0   68    80           80    +12
5    Going Global         3    60.0    5    9.75     2.0   52    76           76    +24
6    Leao Alado           2    56.0    6    17.75    0.0   -     72           72    +72
7    Crown Prince         3    60.0    7    24.50    2.0   50    76           76    +26
99   Pembroke             3    60.0    99   0.00     2.0   -     76           76    +0
99   Fully Loaded         5    57.5    99   0.00     0.0   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Scallywag 63 97 69 +28 0.0 -
2 Free Movement Line 76 81 76 +5 2.0
3 American Grayson - 84 76 +8 2.0 -
4 Mayor Of Merrivale 68 59 80 -21 0.0 -
5 Going Global 52 50 76 -26 2.0 -
6 Leao Alado - 77 72 +5 0.0 -
7 Crown Prince 50 50 76 -26 2.0 -
99 Pembroke - 79 76 +3 2.0 -
99 Fully Loaded - 94 75 +19 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