Official NHA Assessment

Race 1: BETWAY INSUREBET WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Annewithan E
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
5 / 7
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    Annewithan E         2    57.0    1    0.00     0.0   76    76           76    +0
2    Fairy Circle         2    57.0    2    8.00     0.0   74    76           76    +2
3    Mambo Line           3    60.0    3    12.75    8.5   43    65           65    +22
4    Into Line            3    57.0    4    13.75    8.5   -     59           59    +59
5    Silver Jubilee       3    55.5    5    14.00    8.5   -     56           56    +56
6    Monte Cinto          3    57.5    6    15.50    8.5   -     60           60    +60
7    Play With Fire       4    57.0    7    18.50    6.0   74    64           64    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Annewithan E Line 76 74 76 -2 0.0
2 Fairy Circle 74 52 76 -24 0.0 -
3 Mambo Line 43 41 65 -24 8.5 -
4 Into Line - - 59 -59 8.5 -
5 Silver Jubilee - 58 56 +2 8.5 -
6 Monte Cinto - 48 60 -12 8.5 -
7 Play With Fire 74 79 64 +15 6.0 -
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