Official NHA Assessment

Race 4: WSB.CO.ZA MAIDEN PLATE (For all Maidens)

Back to Race
Line Horse
Iron Monger
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
4 / 9
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Policy Of Truth      2    60.0    1    0.00     0.0   77    62           62    -15
2    Rainbow Of Roses     3    56.5    2    6.00     3.5   72    48           62    -10
3    Chief Of Staff       3    56.0    3    7.40     3.5   62    47           52    -10
4    Iron Monger          2    60.0    4    8.80     0.0   62    62           62    +0
5    Trip To Nebraska     2    56.5    5    12.20    0.0   55    55           55    +0
6    Triton               3    60.0    6    15.90    3.5   56    55           55    -1
7    Allrite              3    60.0    7    16.30    3.5   63    55           55    -8
8    Lemon Scent          3    56.5    8    24.50    3.5   59    48           49    -10
9    Exquisite Dawn       2    56.5    9    99.99    0.0   64    55           55    -9
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Policy Of Truth 77 71 62 +9 0.0 -
2 Rainbow Of Roses 72 66 62 +4 3.5 -
3 Chief Of Staff 62 58 52 +6 3.5 -
4 Iron Monger Line 62 64 62 +2 0.0
5 Trip To Nebraska 55 55 55 ✓ Match 0.0 -
6 Triton 56 52 55 -3 3.5 -
7 Allrite 63 63 55 +8 3.5 -
8 Lemon Scent 59 58 49 +9 3.5 -
9 Exquisite Dawn 64 58 55 +3 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