Official NHA Assessment

Race 4: www.tabgold.co.za MAIDEN PLATE (For all Maidens)

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Line Horse
Alpenhorn
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 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    Alpenhorn            3    60.0    1    0.00     1.5   63    63           63    +0
2    Peteca               3    60.0    2    1.00     1.5   71    67           67    -4
3    Duke Of Africa       5    56.0    3    1.10     0.0   -     62           62    +62
4    Flying Wonder        3    60.0    4    3.10     1.5   -     65           65    +65
5    Fill Your Boots      3    60.0    5    4.60     1.5   46    63           63    +17
6    Shot Of Courage      3    60.0    6    9.80     1.5   54    63           63    +9
7    Wildstyle            2    56.0    7    10.00    0.0   -     58           58    +58
8    Don't Linngar        3    60.0    8    20.30    1.5   -     63           63    +63
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Alpenhorn Line 63 58 63 -5 1.5
2 Peteca 71 58 67 -9 1.5 -
3 Duke Of Africa - 76 62 +14 0.0 -
4 Flying Wonder - 52 65 -13 1.5 -
5 Fill Your Boots 46 57 63 -6 1.5 -
6 Shot Of Courage 54 73 63 +10 1.5 -
7 Wildstyle - 62 58 +4 0.0 -
8 Don't Linngar - 62 63 -1 1.5 -
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