Official NHA Assessment

Race 3: TAKE A BET WINA NUMBA NUMBA MAIDEN HANDICAP (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Japanese Maple
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 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    Callaburn            2    59.0    1    0.00     0.0   69    64           69    +0
2    Japanese Maple       4    60.0    2    0.60     1.0   71    71           71    +0
3    Roll Of The Dice     3    57.5    3    0.90     2.0   66    63           63    -3
4    Manz Knight          6    53.0    4    1.60     0.0   60    57           57    -3
5    Global Reef          3    57.0    5    3.60     2.0   65    59           59    -6
6    Incredible Indrani   3    58.0    6    4.50     2.0   67    59           59    -8
7    Alakanani            4    52.0    7    6.25     1.0   42    48           48    +6
8    Angel Of My Heart    3    57.0    8    7.00     2.0   65    56           56    -9
9    Plum Blossom         3    55.5    9    11.75    2.0   62    53           53    -9
10   Viva La Victor       2    58.0    10   33.75    0.0   67    62           62    -5
99   The Merciful         5    52.0    99   0.00     0.0   -     50           50    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Callaburn 69 52 69 -17 0.0 -
2 Japanese Maple Line 71 56 71 -15 1.0
3 Roll Of The Dice 66 81 63 +18 2.0 -
4 Manz Knight 60 60 57 +3 0.0 -
5 Global Reef 65 68 59 +9 2.0 -
6 Incredible Indrani 67 68 59 +9 2.0 -
7 Alakanani 42 59 48 +11 1.0 -
8 Angel Of My Heart 65 51 56 -5 2.0 -
9 Plum Blossom 62 53 53 ✓ Match 2.0 -
10 Viva La Victor 67 62 62 ✓ Match 0.0 -
99 The Merciful - 54 50 +4 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