Official NHA Assessment

Race 6: RACEHORSE OWNERS ASSOCIATION CLASSIFIED STAKES (For horses with nett rating of 71 and below)

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Line Horse
Notorix
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
3 / 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    Arturo               2    54.5    1    0.00     1.5   60    56           56    -4
2    Duke Of Orange       3    48.0    2    1.00     2.5   54    41           44    -10
3    Notorix              6    60.0    3    3.00     0.0   70    70           70    +0
4    Cruzador             6    58.0    4    4.00     0.0   67    66           66    -1
5    Charlie Malone       5    58.0    5    5.25     0.0   66    66           66    +0
6    Seattle Ripper       2    60.0    6    5.50     1.5   72    67           67    -5
7    Great Times          3    56.0    7    6.75     2.5   60    57           57    -3
8    Absolu Noir          8    52.0    8    10.00    0.0   47    54           54    +7
9    Mister Whistle       4    52.5    9    13.25    0.0   53    55           55    +2
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arturo 60 76 56 +20 1.5 -
2 Duke Of Orange 54 53 44 +9 2.5 -
3 Notorix Line 70 68 70 -2 0.0
4 Cruzador 67 61 66 -5 0.0 -
5 Charlie Malone 66 71 66 +5 0.0 -
6 Seattle Ripper 72 59 67 -8 1.5 -
7 Great Times 60 54 57 -3 2.5 -
8 Absolu Noir 47 50 54 -4 0.0 -
9 Mister Whistle 53 52 55 -3 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