Official NHA Assessment

Race 6: BOOK FOR CHARITY MILE 28 OCTOBER MR 72 HANDICAP (Open)

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Line Horse
Dungeons
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
5 / 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    Rain Or Shine        4    61.0    1    0.00     7.0   74    58           74    +0
2    Dungeons             2    59.5    2    2.00     0.0   72    72           72    +0
3    Here Is The Tiger    3    60.0    3    2.50     9.0   72    54           62    -10
4    Carnelo              6    52.0    4    3.75     0.0   56    55           55    -1
5    Tanganga             2    59.5    5    4.75     0.0   72    69           69    -3
6    After Hours          7    58.0    6    5.00     0.0   68    66           66    -2
7    Care Taker           4    59.0    7    7.00     7.0   88    54           78    -10
8    In Cahoots           6    53.0    8    7.50     0.0   63    56           56    -7
9    Copper John          4    56.0    9    8.50     7.0   82    48           72    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rain Or Shine 74 82 74 +8 7.0 -
2 Dungeons Line 72 73 72 +1 0.0
3 Here Is The Tiger 72 72 62 +10 9.0 -
4 Carnelo 56 75 55 +20 0.0 -
5 Tanganga 72 66 69 -3 0.0 -
6 After Hours 68 79 66 +13 0.0 -
7 Care Taker 88 76 78 -2 7.0 -
8 In Cahoots 63 54 56 -2 0.0 -
9 Copper John 82 61 72 -11 7.0 -
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