Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Trip To States
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    The Navy Lark        4    58.0    1    0.00     0.0   63    53           53    -10
2    Seventeen Again      2    54.5    2    2.25     1.5   -     43           43    +43
3    Gold Agent           2    56.0    3    4.50     1.5   72    46           62    -10
4    Trip To States       5    60.0    4    6.75     0.0   57    57           57    +0
5    Solamente            3    60.0    5    12.00    2.5   -     52           52    +52
6    It's Up To Me        2    57.5    6    12.25    1.5   37    49           49    +12
7    Blanche              2    54.5    7    15.25    1.5   -     43           43    +43
8    Silver Seven         3    60.0    8    16.00    2.5   20    52           52    +32
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Navy Lark 63 74 53 +21 0.0 -
2 Seventeen Again - 80 43 +37 1.5 -
3 Gold Agent 72 64 62 +2 1.5 -
4 Trip To States Line 57 63 57 +6 0.0
5 Solamente - 30 52 -22 2.5 -
6 It's Up To Me 37 45 49 -4 1.5 -
7 Blanche - - 43 -43 1.5 -
8 Silver Seven 20 38 52 -14 2.5 -
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