Official NHA Assessment

Race 2: OFF THE RAILS MR 86 HANDICAP (Open)

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Line Horse
Sunday Island (AUS)
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
4 / 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    Warrior Bling        5    55.0    1    0.00     0.0   76    84           76    +0
2    Sunday Island (AUS)  3    60.0    2    0.05     2.5   89    89           89    +0
3    Etiquette            3    57.0    3    1.45     2.5   83    88           88    +5
4    Exceeder             4    54.0    4    3.45     1.0   74    83           83    +9
5    Captain Who          4    54.5    5    5.05     1.0   75    81           81    +6
6    Oh So Squishy        3    61.0    6    7.35     2.5   88    91           91    +3
99   Syx Hotfix           3    58.0    99   0.00     2.5   -     85           85    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Warrior Bling 76 87 76 +11 0.0 -
2 Sunday Island (AUS) Line 89 86 89 -3 2.5
3 Etiquette 83 83 88 -5 2.5 -
4 Exceeder 74 59 83 -24 1.0 -
5 Captain Who 75 65 81 -16 1.0 -
6 Oh So Squishy 88 68 91 -23 2.5 -
99 Syx Hotfix - 83 85 -2 2.5 -
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