Official NHA Assessment

Race 9: #destinationcaperacing CLASS 4 (Open. Benchmark at 60.0kg = 78)

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Line Horse
Night Bomber
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 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    Oliver               5    60.0    1    0.00     0.0   78    81           81    +3
2    Night Bomber         4    59.0    2    2.50     0.0   79    79           79    +0
3    Night Tiger          5    61.5    3    2.70     0.0   81    84           84    +3
4    Escarpment           4    59.0    4    2.80     0.0   79    79           79    +0
5    Go It Alone          4    61.5    5    3.55     0.0   84    84           84    +0
6    Boogiefied (AUS)     4    60.5    6    4.30     0.0   82    82           82    +0
7    Devil A Saint        4    59.5    7    6.30     0.0   80    80           80    +0
8    Heart Stealer        5    55.0    8    7.55     0.0   68    71           71    +3
9    Grand Bay            2    59.0    9    7.85     1.5   79    76           76    -3
10   Guarding The Wall    4    55.0    10   13.35    0.0   71    71           71    +0
11   Stars In Heaven      2    56.5    11   13.65    1.5   74    71           71    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Oliver 78 97 81 +16 0.0 -
2 Night Bomber Line 79 96 79 +17 0.0
3 Night Tiger 81 67 84 -17 0.0 -
4 Escarpment 79 79 79 ✓ Match 0.0 -
5 Go It Alone 84 69 84 -15 0.0 -
6 Boogiefied (AUS) 82 90 82 +8 0.0 -
7 Devil A Saint 80 69 80 -11 0.0 -
8 Heart Stealer 68 80 71 +9 0.0 -
9 Grand Bay 79 74 76 -2 1.5 -
10 Guarding The Wall 71 67 71 -4 0.0 -
11 Stars In Heaven 74 87 71 +16 1.5 -
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