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
Trust The Fire
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 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    Stormy Seas          4    60.0    1    0.00     12.0  70    69           69    -1
2    Trust The Fire       4    56.0    2    0.25     12.0  61    61           61    +0
3    Stormy Lass          3    56.5    3    0.40     10.5  66    65           65    -1
4    Phinda Mzala         4    60.0    4    1.25     12.0  68    69           69    +1
5    Admiralty Arch       3    60.0    5    1.75     10.5  70    72           72    +2
6    Wings Of Nike        6    48.5    6    3.00     0.0   57    70           70    +13
7    Clean Living         2    56.5    7    4.25     7.0   81    72           72    -9
8    Edgartown            3    56.0    8    5.75     10.5  62    64           64    +2
9    Mercer Girl          6    51.0    9    5.85     0.0   52    75           75    +23
10   Princess Queen       3    52.5    10   8.00     10.5  48    57           57    +9
11   Daisy Buchanan       2    58.5    11   9.00     7.0   82    76           76    -6
99   In The Ether         6    52.5    99   0.00     0.0   -     78           78    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Stormy Seas 70 77 69 +8 12.0 -
2 Trust The Fire Line 61 65 61 +4 12.0
3 Stormy Lass 66 61 65 -4 10.5 -
4 Phinda Mzala 68 54 69 -15 12.0 -
5 Admiralty Arch 70 77 72 +5 10.5 -
6 Wings Of Nike 57 68 70 -2 0.0 -
7 Clean Living 81 61 72 -11 7.0 -
8 Edgartown 62 57 64 -7 10.5 -
9 Mercer Girl 52 53 75 -22 0.0 -
10 Princess Queen 48 45 57 -12 10.5 -
11 Daisy Buchanan 82 74 76 -2 7.0 -
99 In The Ether - 63 78 -15 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