Official NHA Assessment

Race 5: MAURITZFONTEIN STUD FM 84 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Dupont Emerald
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
6 / 13
Within 2 points
Significant Diffs
0 / 13
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    La Landonne          2    54.5    1    0.00     0.0   79    75           79    +0
2    Dupont Emerald       3    56.5    2    2.00     2.5   77    77           77    +0
3    Volare E Mambo       4    53.5    3    3.50     1.5   76    71           71    -5
4    Lady Bomber          3    61.5    4    3.55     2.5   87    85           85    -2
5    You're So Special    2    57.5    5    4.80     0.0   85    81           81    -4
6    My Ami Beach         6    54.5    6    5.55     0.0   72    75           75    +3
7    Great Notion         3    62.0    7    5.65     2.5   88    85           85    -3
8    Mountain High        3    59.0    8    7.15     2.5   82    79           79    -3
9    Cherry Oh Baby       4    57.0    9    8.40     1.5   78    77           77    -1
10   Blue Palace          2    53.5    10   9.15     0.0   71    73           73    +2
11   White Waters         2    55.0    11   9.25     0.0   74    76           76    +2
12   Exquisite            3    59.5    12   14.50    2.5   83    80           80    -3
99   Family Power         4    61.5    99   0.00     1.5   -     86           86    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 La Landonne 79 83 79 +4 0.0 -
2 Dupont Emerald Line 77 77 77 ✓ Match 2.5
3 Volare E Mambo 76 76 71 +5 1.5 -
4 Lady Bomber 87 87 85 +2 2.5 -
5 You're So Special 85 83 81 +2 0.0 -
6 My Ami Beach 72 70 75 -5 0.0 -
7 Great Notion 88 87 85 +2 2.5 -
8 Mountain High 82 82 79 +3 2.5 -
9 Cherry Oh Baby 78 78 77 +1 1.5 -
10 Blue Palace 71 69 73 -4 0.0 -
11 White Waters 74 73 76 -3 0.0 -
12 Exquisite 83 83 80 +3 2.5 -
99 Family Power - 87 86 +1 1.5 -
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