Official NHA Assessment

Race 4: RACING240 FOR RACING. FOR YOU MR 74 HANDICAP (Open)

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Line Horse
Diesel's Shadow
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
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    Fifth Of July        5    56.0    1    0.00     0.0   66    80           66    +0
2    Japanese Maple       4    58.5    2    2.00     7.0   73    74           74    +1
3    Diesel's Shadow      4    59.0    3    2.50     7.0   74    74           74    +0
4    Black Lightning      2    59.0    4    3.75     0.0   72    87           87    +15
5    Thambi               5    59.5    5    5.00     0.0   73    87           87    +14
6    Hazlo Grande         3    58.0    6    9.50     10.0  70    64           64    -6
99   Eiger Sanction       3    55.5    99   0.00     10.0  -     59           59    +0
99   Princess Kesh        3    61.5    99   0.00     10.0  -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fifth Of July 66 63 66 -3 0.0 -
2 Japanese Maple 73 56 74 -18 7.0 -
3 Diesel's Shadow Line 74 80 74 +6 7.0
4 Black Lightning 72 64 87 -23 0.0 -
5 Thambi 73 55 87 -32 0.0 -
6 Hazlo Grande 70 74 64 +10 10.0 -
99 Eiger Sanction - 79 59 +20 10.0 -
99 Princess Kesh - 77 71 +6 10.0 -
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