Official NHA Assessment

Race 10: NEXT TURFFONTEIN RACEMEETING THURSDAY 7 NOVEMBER MR 75 HANDICAP (Open)

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Line Horse
Callaburn
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 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    Diwali Rocket        3    54.5    1    0.00     8.0   85    55           85    +0
2    High Queue           4    59.0    2    1.75     4.5   74    74           74    +0
3    Towers Of Gold       3    57.0    3    2.50     8.0   85    62           75    -10
4    Callaburn            2    51.5    4    3.25     0.0   67    67           67    +0
5    Red Legend           2    58.0    5    5.50     0.0   87    78           78    -9
6    New Mexico           2    61.0    6    6.00     0.0   77    84           84    +7
7    American Rebel       4    59.5    7    10.25    4.5   75    72           72    -3
8    Global Impact        2    57.5    8    18.50    0.0   70    77           77    +7
99   Hazlo Grande         3    61.0    99   0.00     8.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Diwali Rocket 85 89 85 +4 8.0 -
2 High Queue 74 74 74 ✓ Match 4.5 -
3 Towers Of Gold 85 93 75 +18 8.0 -
4 Callaburn Line 67 52 67 -15 0.0
5 Red Legend 87 81 78 +3 0.0 -
6 New Mexico 77 83 84 -1 0.0 -
7 American Rebel 75 81 72 +9 4.5 -
8 Global Impact 70 74 77 -3 0.0 -
99 Hazlo Grande - 74 68 +6 8.0 -
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