Official NHA Assessment

Race 8: PERFECTLY PLACED C STAKES (For All Horses with a nett rating of 83 & below)

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Line Horse
Rattlesnake
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 10
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    Barney Mcgrew        4    58.5    1    0.00     6.0   72    75           75    +3
2    Rafa Bay             2    60.0    2    0.40     3.5   82    83           83    +1
3    Peace Of Mind        3    59.0    3    2.15     5.0   85    78           78    -7
4    Rattlesnake          3    60.0    4    2.65     5.0   80    80           80    +0
5    Across The Bow       3    58.5    5    3.15     5.0   70    77           77    +7
6    Furious Queen        3    59.0    6    4.15     5.0   83    78           78    -5
7    Maneki Neko          2    58.5    7    4.90     3.5   71    80           80    +9
8    In The Green Zone    3    59.0    8    5.30     5.0   83    78           78    -5
9    Casino Ace           5    55.5    9    7.55     0.0   65    81           81    +16
99   United Nation        3    57.0    99   0.00     5.0   -     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 Barney Mcgrew 72 69 75 -6 6.0 -
2 Rafa Bay 82 96 83 +13 3.5 -
3 Peace Of Mind 85 74 78 -4 5.0 -
4 Rattlesnake Line 80 85 80 +5 5.0
5 Across The Bow 70 57 77 -20 5.0 -
6 Furious Queen 83 79 78 +1 5.0 -
7 Maneki Neko 71 60 80 -20 3.5 -
8 In The Green Zone 83 76 78 -2 5.0 -
9 Casino Ace 65 56 81 -25 0.0 -
99 United Nation - 89 74 +15 5.0 -
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