Official NHA Assessment

Race 2: LUCKY FISH CHILLI HEAT MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Swift Serenity
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
3 / 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    Iona Castle          3    60.0    1    0.00     3.0   76    74           74    -2
2    Swift Serenity       2    60.0    2    2.25     2.0   76    76           76    +0
3    Scandalize           2    60.0    3    2.75     2.0   71    76           76    +5
4    Rock The Road        3    60.0    4    4.00     3.0   -     74           74    +74
5    Love Her Madly       2    60.0    5    4.05     2.0   73    76           76    +3
6    Kiera Rose           3    60.0    6    5.80     3.0   -     74           74    +74
7    Bluffton             3    56.0    7    13.55    3.0   -     66           66    +66
99   Sans Serif           2    57.0    99   0.00     2.0   -     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 Iona Castle 76 79 74 +5 3.0 -
2 Swift Serenity Line 76 74 76 -2 2.0
3 Scandalize 71 73 76 -3 2.0 -
4 Rock The Road - - 74 -74 3.0 -
5 Love Her Madly 73 70 76 -6 2.0 -
6 Kiera Rose - 74 74 ✓ Match 3.0 -
7 Bluffton - 48 66 -18 3.0 -
99 Sans Serif - - 70 - 2.0 -
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