Official NHA Assessment

Race 1: THE ROA CELEBRATES LIFE MEMBERS MIDDLE STAKES (For horses with nett rating of 105 and below)

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Line Horse
Breeze Over
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
5 / 6
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    Mo Ment              4    50.0    1    0.00     9.0   81    62           62    -19
2    Breeze Over          5    60.0    2    10.50    0.0   100   100          100   +0
3    Key Worker           3    50.5    3    19.00    11.5  86    58           76    -10
4    Gold De Grace        4    47.5    4    34.25    9.0   59    57           57    -2
5    Arumugam             6    54.5    5    99.99    0.0   89    89           89    +0
99   Ryan's Dream         3    50.0    99   0.00     11.5  -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mo Ment 81 93 62 +31 9.0 -
2 Breeze Over Line 100 99 100 -1 0.0
3 Key Worker 86 84 76 +8 11.5 -
4 Gold De Grace 59 51 57 -6 9.0 -
5 Arumugam 89 74 89 -15 0.0 -
99 Ryan's Dream - 65 57 +8 11.5 -
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