Official NHA Assessment

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

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Line Horse
Priceless Treasure
Reference for assessment
Exact Matches
3 / 9
Calculated = Official
Close Matches
5 / 9
Within 2 points
Significant Diffs
3 / 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    Midnight Music       3    56.5    1    0.00     7.5   61    66           66    +5
2    Priceless Treasure   2    56.5    2    1.75     5.0   71    71           71    +0
3    Ocean Flame          2    58.5    3    2.50     5.0   75    75           75    +0
4    Iconic Winter        2    61.0    4    2.60     5.0   70    80           80    +10
5    Engelandpark         2    54.0    5    6.35     5.0   66    66           66    +0
6    Holly's Kiss         3    60.0    6    9.60     7.5   -     73           73    +73
7    Five Star Magic      4    56.5    7    10.85    9.0   61    63           63    +2
8    Kitten Tattoo        3    60.0    8    14.10    7.5   -     73           73    +73
9    Throw A Party        2    53.0    9    38.60    5.0   69    64           64    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Midnight Music 61 66 66 ✓ Match 7.5 -
2 Priceless Treasure Line 71 70 71 -1 5.0
3 Ocean Flame 75 75 75 ✓ Match 5.0 -
4 Iconic Winter 70 68 80 -12 5.0 -
5 Engelandpark 66 66 66 ✓ Match 5.0 -
6 Holly's Kiss - - 73 -73 7.5 -
7 Five Star Magic 61 61 63 -2 9.0 -
8 Kitten Tattoo - - 73 -73 7.5 -
9 Throw A Party 69 69 64 +5 5.0 -
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