Official NHA Assessment

Race 10: SOUTH AFRICAN AIRWAYS MR 84 HANDICAP (Open)

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Line Horse
Hazlo Grande
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
6 / 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    Jet Dynasty          3    60.0    1    0.00     8.0   85    82           85    +0
2    George Handel        4    53.5    2    0.75     4.5   87    80           80    -7
3    Weather Wizard       3    52.5    3    0.85     8.0   85    71           75    -10
4    Hazlo Grande         3    57.0    4    1.40     8.0   79    79           79    +0
5    American Star        3    59.5    5    1.50     8.0   84    84           84    +0
6    Youcanthurrylove     5    59.0    6    2.00     0.0   82    99           99    +17
7    Scarlett Pimpernel   2    58.5    7    4.25     0.0   97    96           96    -1
8    Trois Trois Quatre   5    61.0    8    5.25     0.0   87    100          100   +13
9    Leeson               3    56.5    9    7.25     8.0   77    75           75    -2
10   Wolffs World         4    57.5    10   19.00    4.5   79    84           84    +5
11   Black Lightning      2    58.5    11   28.00    0.0   82    95           95    +13
99   Clarkson             4    58.0    99   0.00     4.5   -     85           85    +0
99   Black Silver         4    61.0    99   0.00     4.5   -     91           91    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jet Dynasty 85 82 85 -3 8.0 -
2 George Handel 87 85 80 +5 4.5 -
3 Weather Wizard 85 81 75 +6 8.0 -
4 Hazlo Grande Line 79 74 79 -5 8.0
5 American Star 84 83 84 -1 8.0 -
6 Youcanthurrylove 82 86 99 -13 0.0 -
7 Scarlett Pimpernel 97 90 96 -6 0.0 -
8 Trois Trois Quatre 87 87 100 -13 0.0 -
9 Leeson 77 72 75 -3 8.0 -
10 Wolffs World 79 79 84 -5 4.5 -
11 Black Lightning 82 64 95 -31 0.0 -
99 Clarkson - 75 85 -10 4.5 -
99 Black Silver - 86 91 -5 4.5 -
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