Official NHA Assessment

Race 4: www.tabgold.co.za FM 70 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Lundy Island
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
5 / 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    Lady Yusra           3    59.5    1    0.00     4.0   77    62           77    +0
2    Mode                 4    55.5    2    1.50     2.0   61    61           61    +0
3    Port Adelaide (AUS)  4    56.0    3    2.00     2.0   62    62           62    +0
4    Lundy Island         4    60.0    4    2.15     2.0   70    70           70    +0
5    Maid In France       4    56.0    5    2.65     2.0   65    61           61    -4
6    Purple Shadow        4    59.0    6    3.45     2.0   68    66           66    -2
7    Hot Money            5    58.0    7    3.75     0.0   66    68           68    +2
8    Dancing Sword        5    59.5    8    4.35     0.0   69    70           70    +1
9    Golden Delight       4    53.5    9    5.15     2.0   57    54           54    -3
99   Crystal Cove         4    52.0    99   0.00     2.0   -     51           51    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lady Yusra 77 85 77 +8 4.0 -
2 Mode 61 49 61 -12 2.0 -
3 Port Adelaide (AUS) 62 54 62 -8 2.0 -
4 Lundy Island Line 70 66 70 -4 2.0
5 Maid In France 65 57 61 -4 2.0 -
6 Purple Shadow 68 62 66 -4 2.0 -
7 Hot Money 66 62 68 -6 0.0 -
8 Dancing Sword 69 64 70 -6 0.0 -
9 Golden Delight 57 50 54 -4 2.0 -
99 Crystal Cove - 51 51 ✓ Match 2.0 -
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