Official NHA Assessment

Race 7: RACING TODAY CLASSIFIED STAKES (For horses with nett rating of 66 and below)

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Line Horse
Arturo
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
3 / 12
Within 2 points
Significant Diffs
7 / 12
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    Duke Of Orange       3    50.0    1    0.00     1.0   54    42           42    -12
2    Arturo               2    60.0    2    0.75     0.0   68    68           68    +0
3    Irontail             4    60.0    3    0.80     0.5   65    67           67    +2
4    Morning Chess        4    60.0    4    2.05     0.5   66    66           66    +0
5    Joyous Jubilee (AUS  2    58.0    5    2.30     0.0   61    62           62    +1
6    Sea Of Tears         2    58.5    6    2.35     0.0   64    63           63    -1
7    Lady Crusade         3    58.5    7    3.85     1.0   66    60           60    -6
8    Charlie Malone       5    60.0    8    4.10     0.0   66    65           65    -1
9    Pashtunwali          6    60.0    9    4.20     0.0   65    65           65    +0
10   War Launch           2    54.0    10   6.45     0.0   56    52           52    -4
99   Ravilious            3    60.0    99   0.00     1.0   -     62           62    +0
99   Russian Empire       5    60.0    99   0.00     0.0   -     64           64    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Duke Of Orange 54 53 42 +11 1.0 -
2 Arturo Line 68 76 68 +8 0.0
3 Irontail 65 64 67 -3 0.5 -
4 Morning Chess 66 65 66 -1 0.5 -
5 Joyous Jubilee (AUS) 61 61 62 -1 0.0 -
6 Sea Of Tears 64 60 63 -3 0.0 -
7 Lady Crusade 66 67 60 +7 1.0 -
8 Charlie Malone 66 71 65 +6 0.0 -
9 Pashtunwali 65 58 65 -7 0.0 -
10 War Launch 56 50 52 -2 0.0 -
99 Ravilious - 81 62 +19 1.0 -
99 Russian Empire - 53 64 -11 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