Official NHA Assessment

Race 4: www.tabgold.co.za MR 66 HANDICAP (Open)

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Line Horse
Gilda Gray
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
5 / 10
Within 2 points
Significant Diffs
4 / 10
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    Justfortheepenny     5    56.0    1    0.00     0.0   58    56           58    +0
2    L'Ultimo             2    61.0    2    0.40     0.0   71    71           71    +0
3    Gilda Gray           3    58.0    3    0.50     1.5   62    62           62    +0
4    Riccardo             7    60.5    4    0.70     0.0   67    70           70    +3
5    Vengeance Forever    3    56.5    5    1.40     1.5   59    57           57    -2
6    Exceed Expectation   3    53.0    6    2.00     1.5   55    50           50    -5
7    Rodriguez            6    61.5    7    2.60     0.0   69    69           69    +0
8    Hallerbos            3    59.5    8    4.90     1.5   65    60           60    -5
9    Barbatti             3    54.0    9    6.60     1.5   54    49           49    -5
99   Trusova              2    60.5    99   0.00     0.0   -     65           65    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Justfortheepenny 58 65 58 +7 0.0 -
2 L'Ultimo 71 61 71 -10 0.0 -
3 Gilda Gray Line 62 64 62 +2 1.5
4 Riccardo 67 68 70 -2 0.0 -
5 Vengeance Forever 59 51 57 -6 1.5 -
6 Exceed Expectation 55 52 50 +2 1.5 -
7 Rodriguez 69 69 69 ✓ Match 0.0 -
8 Hallerbos 65 57 60 -3 1.5 -
9 Barbatti 54 47 49 -2 1.5 -
99 Trusova - 78 65 +13 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