Official NHA Assessment

Race 5: RACING240 MR 84 HANDICAP (Open)

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Line Horse
Diwali Rocket
Reference for assessment
Exact Matches
3 / 14
Calculated = Official
Close Matches
8 / 14
Within 2 points
Significant Diffs
1 / 14
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    World Of Royalty     2    56.0    1    0.00     0.0   86    81           86    +0
2    Diwali Rocket        3    61.5    2    2.70     3.5   87    87           87    +0
3    Page Boy             3    57.5    3    3.45     3.5   79    78           78    -1
4    Terrence             3    53.5    4    4.55     3.5   78    69           69    -9
5    Deception Pass       4    55.0    5    4.75     1.5   79    76           76    -3
6    Vesuvio              5    60.0    6    5.25     0.0   84    89           89    +5
7    Golden Warrior       2    61.0    7    6.00     0.0   93    91           91    -2
8    Gimmeachoice         3    60.5    8    8.40     3.5   85    83           83    -2
9    Carnelo              6    55.5    9    12.50    0.0   75    80           80    +5
99   Dual Prophecy        3    56.0    99   0.00     3.5   -     74           74    +0
99   Ideal Summer         2    58.0    99   0.00     0.0   -     85           85    +0
99   Palace Attack        2    57.5    99   0.00     0.0   -     84           84    +0
99   Dark Silver          4    57.5    99   0.00     1.5   -     81           81    +0
99   Arumugam             6    55.0    99   0.00     0.0   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 World Of Royalty 86 86 86 ✓ Match 0.0 -
2 Diwali Rocket Line 87 87 87 ✓ Match 3.5
3 Page Boy 79 79 78 +1 3.5 -
4 Terrence 78 78 69 +9 3.5 -
5 Deception Pass 79 79 76 +3 1.5 -
6 Vesuvio 84 84 89 -5 0.0 -
7 Golden Warrior 93 93 91 +2 0.0 -
8 Gimmeachoice 85 85 83 +2 3.5 -
9 Carnelo 75 75 80 -5 0.0 -
99 Dual Prophecy - 79 74 +5 3.5 -
99 Ideal Summer - 86 85 +1 0.0 -
99 Palace Attack - 84 84 ✓ Match 0.0 -
99 Dark Silver - 83 81 +2 1.5 -
99 Arumugam - 74 79 -5 0.0 -
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