Official NHA Assessment

Race 2: www.tabgold.co.za FM 64 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Roy's Rocker
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
5 / 12
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    Ideal Gift           2    59.0    1    0.00     0.0   62    71           62    +0
2    Gelsomina            3    54.0    2    0.05     4.5   52    52           52    +0
3    Roy's Rocker         3    54.0    3    0.25     4.5   52    52           52    +0
4    True Love's Kiss     3    60.5    4    1.35     4.5   74    68           68    -6
5    Doctor's Orders      2    58.0    5    2.05     0.0   69    72           72    +3
6    Mythical Tune        3    53.5    6    2.30     4.5   54    53           53    -1
7    Drive By             6    58.0    7    3.70     0.0   60    70           70    +10
8    Columbia Road        3    56.0    8    4.00     4.5   56    57           57    +1
9    Bay Breeze           3    57.0    9    4.05     4.5   58    59           59    +1
10   Vermacilli           3    55.5    10   5.05     4.5   55    55           55    +0
11   Nonoti               2    57.0    11   5.55     0.0   61    67           67    +6
99   Whatsupbuttacup      3    59.5    99   0.00     4.5   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ideal Gift 62 71 62 +9 0.0 -
2 Gelsomina 52 55 52 +3 4.5 -
3 Roy's Rocker Line 52 53 52 +1 4.5
4 True Love's Kiss 74 74 68 +6 4.5 -
5 Doctor's Orders 69 79 72 +7 0.0 -
6 Mythical Tune 54 50 53 -3 4.5 -
7 Drive By 60 68 70 -2 0.0 -
8 Columbia Road 56 54 57 -3 4.5 -
9 Bay Breeze 58 52 59 -7 4.5 -
10 Vermacilli 55 54 55 -1 4.5 -
11 Nonoti 61 57 67 -10 0.0 -
99 Whatsupbuttacup - 65 63 +2 4.5 -
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