Official NHA Assessment

Race 2: 4RACING.TV MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Hundredfifthavenue
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 10
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    Idabelle             2    60.0    1    0.00     0.0   62    62           62    +0
2    Anna Karenina        3    60.0    2    4.25     0.5   65    62           62    -3
3    Miss Tucker          3    60.0    3    4.50     0.5   54    61           61    +7
4    Hundredfifthavenue   2    60.0    4    4.75     0.0   62    62           62    +0
5    Principessa Mia      3    60.0    5    4.85     0.5   63    61           61    -2
6    Coffee In Seattle    3    60.0    6    5.10     0.5   63    61           61    -2
7    Ponderosa Pine       2    60.0    7    7.60     0.0   60    62           62    +2
8    Sundrop              6    60.0    8    8.60     0.0   54    62           62    +8
9    Glittering Boots     3    60.0    9    10.85    0.5   55    61           61    +6
10   Kungfoo Lightning    2    60.0    10   24.85    0.0   45    62           62    +17
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Idabelle 62 70 62 +8 0.0 -
2 Anna Karenina 65 58 62 -4 0.5 -
3 Miss Tucker 54 48 61 -13 0.5 -
4 Hundredfifthavenue Line 62 57 62 -5 0.0
5 Principessa Mia 63 59 61 -2 0.5 -
6 Coffee In Seattle 63 54 61 -7 0.5 -
7 Ponderosa Pine 60 63 62 +1 0.0 -
8 Sundrop 54 48 62 -14 0.0 -
9 Glittering Boots 55 52 61 -9 0.5 -
10 Kungfoo Lightning 45 38 62 -24 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