Official NHA Assessment

Race 3: www.tabgold.co.za FM 64 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Columbia Road
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
7 / 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    Summerland           5    54.5    1    0.00     0.0   53    60           53    +0
2    Columbia Road        3    56.0    2    3.50     5.0   56    56           56    +0
3    Whatsupbuttacup      3    58.5    3    4.30     5.0   64    59           59    -5
4    Ingakara             5    54.0    4    4.50     0.0   52    60           60    +8
5    Mythical Tune        3    54.5    5    4.90     5.0   58    50           50    -8
6    Doctor's Orders      2    59.0    6    6.30     0.0   72    69           69    -3
7    Rosy Future          4    59.5    7    20.00    2.5   63    65           65    +2
8    Burmese Tiara        4    56.0    8    21.50    2.5   64    58           58    -6
99   Stealth Attack       2    55.5    99   0.00     0.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Summerland 53 45 53 -8 0.0 -
2 Columbia Road Line 56 54 56 -2 5.0
3 Whatsupbuttacup 64 65 59 +6 5.0 -
4 Ingakara 52 53 60 -7 0.0 -
5 Mythical Tune 58 50 50 ✓ Match 5.0 -
6 Doctor's Orders 72 79 69 +10 0.0 -
7 Rosy Future 63 55 65 -10 2.5 -
8 Burmese Tiara 64 68 58 +10 2.5 -
99 Stealth Attack - 52 62 -10 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