Official NHA Assessment

Race 7: NELSON MANDELA BAY RACING POLY CHALLENGE (Open - 3rd Leg (Non-Blk Type))

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Line Horse
Herodotus
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
3 / 10
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    Cat Daddy            6    62.0    1    0.00     0.0   103   99           99    -4
2    My Bestie            7    62.0    2    0.50     0.0   103   104          104   +1
3    Greenlighttoheaven   4    59.5    3    1.25     5.0   93    88           88    -5
4    You Know Who         3    59.5    4    1.50     8.0   97    81           87    -10
5    Herodotus            6    62.0    5    1.60     0.0   102   102          102   +0
6    Safari Blue          3    61.0    6    2.35     8.0   99    83           89    -10
7    Naval Secret         4    55.0    7    2.60     5.0   81    77           77    -4
8    Ablueazure           3    55.0    8    4.85     8.0   81    69           71    -10
9    Marmara Sea          5    62.0    9    5.85     0.0   106   99           99    -7
10   Tarantino            4    59.5    10   7.85     5.0   92    84           84    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cat Daddy 103 98 99 -1 0.0 -
2 My Bestie 103 61 104 -43 0.0 -
3 Greenlighttoheaven 93 83 88 -5 5.0 -
4 You Know Who 97 91 87 +4 8.0 -
5 Herodotus Line 102 102 102 ✓ Match 0.0
6 Safari Blue 99 91 89 +2 8.0 -
7 Naval Secret 81 91 77 +14 5.0 -
8 Ablueazure 81 76 71 +5 8.0 -
9 Marmara Sea 106 101 99 +2 0.0 -
10 Tarantino 92 96 84 +12 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