Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY OPEN MAIDEN (F & M) (For Maiden Fillies and Mares)

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Line Horse
Engelandpark
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
4 / 12
Within 2 points
Significant Diffs
6 / 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    Laydelay             2    59.5    1    0.00     3.5   74    74           74    +0
2    Iced Marmalade       2    54.5    2    1.25     3.5   64    64           64    +0
3    Engelandpark         2    58.0    3    5.00     3.5   71    71           71    +0
4    Tipsy                3    61.0    4    5.25     5.0   -     74           74    +74
5    Elusive Bomba        3    49.5    5    5.30     5.0   55    51           51    -4
6    Night In Japan       3    50.5    6    6.55     5.0   51    53           53    +2
7    Kentucky Lassie      3    59.5    7    6.80     5.0   74    71           71    -3
8    Mme Huntress         3    57.0    8    9.05     5.0   77    66           67    -10
9    Misspeacekeeper      3    61.0    9    9.80     5.0   -     74           74    +74
10   Ice Spear            2    55.5    10   14.05    3.5   66    66           66    +0
99   Alleyah's Rocket     3    51.5    99   0.00     5.0   -     55           55    +0
99   Sombreuil            2    57.5    99   0.00     3.5   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Laydelay 74 76 74 +2 3.5 -
2 Iced Marmalade 64 73 64 +9 3.5 -
3 Engelandpark Line 71 66 71 -5 3.5
4 Tipsy - 67 74 -7 5.0 -
5 Elusive Bomba 55 59 51 +8 5.0 -
6 Night In Japan 51 49 53 -4 5.0 -
7 Kentucky Lassie 74 77 71 +6 5.0 -
8 Mme Huntress 77 61 67 -6 5.0 -
9 Misspeacekeeper - - 74 -74 5.0 -
10 Ice Spear 66 64 66 -2 3.5 -
99 Alleyah's Rocket - 56 55 +1 5.0 -
99 Sombreuil - 70 70 ✓ Match 3.5 -
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