Official NHA Assessment

Race 7: 4RACING.TV MR 68 HANDICAP (Open)

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Line Horse
Written In Stone
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
5 / 11
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    Spring Will Come     3    59.5    1    0.00     1.5   67    62           67    +0
2    Maboneng             3    57.5    2    2.20     1.5   63    61           61    -2
3    Written In Stone     9    54.5    3    3.20     0.0   57    57           57    +0
4    Meet The Captain     4    52.0    4    4.80     0.5   50    49           49    -1
5    Ashanti Sword        2    59.5    5    5.55     0.0   70    65           65    -5
6    Green Sceptre        2    57.0    6    5.80     0.0   70    60           60    -10
7    Lizado               3    52.0    7    9.80     1.5   47    47           47    +0
8    Back To Basics       3    59.5    8    11.50    1.5   67    62           62    -5
99   Twice As Wild        6    54.5    99   0.00     0.0   -     55           55    +0
99   Batik                3    56.0    99   0.00     1.5   -     55           55    +0
99   Rattle Bag           6    62.0    99   0.00     0.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Spring Will Come 67 72 67 +5 1.5 -
2 Maboneng 63 67 61 +6 1.5 -
3 Written In Stone Line 57 67 57 +10 0.0
4 Meet The Captain 50 52 49 +3 0.5 -
5 Ashanti Sword 70 52 65 -13 0.0 -
6 Green Sceptre 70 50 60 -10 0.0 -
7 Lizado 47 42 47 -5 1.5 -
8 Back To Basics 67 72 62 +10 1.5 -
99 Twice As Wild - 51 55 -4 0.0 -
99 Batik - 57 55 +2 1.5 -
99 Rattle Bag - 71 70 +1 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