Official NHA Assessment

Race 4: WILGERBOSDRIFT & MAURITZFONTEIN FM 79 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Perfect Trust
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
8 / 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    Treasure Hunt        6    59.5    1    0.00     0.0   78    74           78    +0
2    Desert Rose          3    57.0    2    0.50     5.0   73    64           64    -9
3    Perfect Trust        7    57.0    3    1.25     0.0   73    73           73    +0
4    Fur Baby             2    56.5    4    1.75     0.0   82    71           72    -10
5    Act Naturally        2    56.0    5    2.25     0.0   81    70           71    -10
6    Zippy Over           3    59.0    6    3.75     5.0   77    64           67    -10
7    Queen Of Sparta      2    60.0    7    4.25     0.0   89    76           79    -10
8    Alfred's Girl        7    55.5    8    5.50     0.0   70    66           66    -4
9    Certainly            2    60.0    9    7.75     0.0   89    75           79    -10
10   Spywing              2    59.0    10   10.00    0.0   87    73           77    -10
11   Body Electric        2    55.5    11   12.25    0.0   80    66           70    -10
99   Copper View          2    57.0    99   0.00     0.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Treasure Hunt 78 80 78 +2 0.0 -
2 Desert Rose 73 75 64 +11 5.0 -
3 Perfect Trust Line 73 50 73 -23 0.0
4 Fur Baby 82 64 72 -8 0.0 -
5 Act Naturally 81 72 71 +1 0.0 -
6 Zippy Over 77 78 67 +11 5.0 -
7 Queen Of Sparta 89 87 79 +8 0.0 -
8 Alfred's Girl 70 65 66 -1 0.0 -
9 Certainly 89 80 79 +1 0.0 -
10 Spywing 87 85 77 +8 0.0 -
11 Body Electric 80 85 70 +15 0.0 -
99 Copper View - 76 69 +7 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