Official NHA Assessment

Race 8: CELEBRATING CENTURION MEMBER YAGAN NAIR'S BIRTHDAY MIDDLE STAKES (For All Horses with a nett rating of 102 & below)

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Line Horse
Diamond Rock
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 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    La Pulga             3    55.5    1    0.00     3.5   93    78           78    -15
2    We Have Touchdown    3    55.5    2    0.50     3.5   93    83           83    -10
3    Pinot Grigio         3    52.5    3    0.90     3.5   85    76           76    -9
4    Diamond Rock         4    55.5    4    2.65     1.5   84    84           84    +0
5    Rule Of Thumb        2    55.5    5    4.65     0.0   86    85           85    -1
6    Solar Power          3    57.0    6    4.95     3.5   90    81           81    -9
7    Call To Unite        2    61.5    7    5.70     0.0   99    97           97    -2
8    Fibonacci            2    54.0    8    7.70     0.0   82    82           82    +0
9    Luce Verde           2    55.5    9    31.70    0.0   85    85           85    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 La Pulga 93 95 78 +17 3.5 -
2 We Have Touchdown 93 89 83 +6 3.5 -
3 Pinot Grigio 85 93 76 +17 3.5 -
4 Diamond Rock Line 84 78 84 -6 1.5
5 Rule Of Thumb 86 86 85 +1 0.0 -
6 Solar Power 90 88 81 +7 3.5 -
7 Call To Unite 99 94 97 -3 0.0 -
8 Fibonacci 82 73 82 -9 0.0 -
9 Luce Verde 85 98 85 +13 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