Official NHA Assessment

Race 8: RACEHORSE OWNERS ASSOCIATION STAYERS (Open (Non-Black Type))

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Line Horse
Flying First Class
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
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    Breeze Over          5    50.0    1    0.00     0.0   87    93           93    +6
2    Positive Attitude    6    50.0    2    3.75     0.0   79    95           95    +16
3    Flying First Class   4    50.0    3    4.25     6.0   83    83           83    +0
4    Arumugam             6    54.0    4    4.75     0.0   98    101          101   +3
5    Black Thorn          4    56.0    5    10.00    6.0   102   93           93    -9
6    Nebraas              8    60.0    6    11.25    0.0   115   113          113   -2
7    Coromandel           4    50.0    7    13.50    6.0   64    81           81    +17
99   Flying Bull          4    54.0    99   0.00     6.0   -     89           89    +0
99   Mambo Come Tesio     3    50.0    99   0.00     9.5   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Breeze Over 87 99 93 +6 0.0 -
2 Positive Attitude 79 90 95 -5 0.0 -
3 Flying First Class Line 83 82 83 -1 6.0
4 Arumugam 98 74 101 -27 0.0 -
5 Black Thorn 102 102 93 +9 6.0 -
6 Nebraas 115 101 113 -12 0.0 -
7 Coromandel 64 59 81 -22 6.0 -
99 Flying Bull - 98 89 +9 6.0 -
99 Mambo Come Tesio - 80 74 +6 9.5 -
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