Official NHA Assessment

Race 1: RACEHORSE OWNERS ASSOCIATION MAIDEN QUALIFIED PLATE (F & M) (For Maiden (F&M) with nett rating of 68 and below)

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Line Horse
Miss Soho
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 8
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    Silver Winter        2    58.0    1    0.00     7.0   81    76           76    -5
2    Miss Soho            2    58.0    2    1.00     7.0   76    76           76    +0
3    Southern Style       5    54.0    3    2.00     0.0   72    82           82    +10
4    Queen's Navy         3    60.0    4    2.50     10.5  42    73           73    +31
5    Nellie Bly           2    56.5    5    3.00     7.0   68    73           73    +5
6    Heartlight           2    58.0    6    10.00    7.0   68    76           76    +8
7    Three Bells          3    58.5    7    19.00    10.5  30    70           70    +40
99   Gaetana              3    60.0    99   0.00     10.5  -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Silver Winter 81 88 76 +12 7.0 -
2 Miss Soho Line 76 73 76 -3 7.0
3 Southern Style 72 54 82 -28 0.0 -
4 Queen's Navy 42 50 73 -23 10.5 -
5 Nellie Bly 68 71 73 -2 7.0 -
6 Heartlight 68 48 76 -28 7.0 -
7 Three Bells 30 43 70 -27 10.5 -
99 Gaetana - 26 73 -47 10.5 -
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