Official NHA Assessment

Race 8: EQUUS CHAMPION MILER CHARLES DICKENS MR 75 HANDICAP (Open)

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Line Horse
After Hours
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 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    Whorly Whorly        7    55.5    1    0.00     0.0   66    64           66    +0
2    Coming In Hot        3    57.0    2    0.05     8.5   69    50           59    -10
3    After Hours          7    56.0    3    3.25     0.0   67    67           67    +0
4    Written In Stone     9    52.5    4    4.50     0.0   54    58           58    +4
5    Viva De Janeiro      5    60.0    5    6.25     0.0   76    73           73    -3
6    Waqaas (AUS)         6    55.0    6    6.50     0.0   65    63           63    -2
7    Top Man              4    58.5    7    8.50     6.0   72    58           62    -10
8    Midnight Caller      4    58.5    8    10.00    6.0   72    58           62    -10
9    Petunia              4    52.0    9    10.50    6.0   49    45           45    -4
10   In Cahoots           6    52.5    10   12.25    0.0   60    58           58    -2
11   Bridge Of Spies      6    52.0    11   23.25    0.0   46    57           57    +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Whorly Whorly 66 78 66 +12 0.0 -
2 Coming In Hot 69 76 59 +17 8.5 -
3 After Hours Line 67 79 67 +12 0.0
4 Written In Stone 54 67 58 +9 0.0 -
5 Viva De Janeiro 76 50 73 -23 0.0 -
6 Waqaas (AUS) 65 56 63 -7 0.0 -
7 Top Man 72 66 62 +4 6.0 -
8 Midnight Caller 72 77 62 +15 6.0 -
9 Petunia 49 47 45 +2 6.0 -
10 In Cahoots 60 54 58 -4 0.0 -
11 Bridge Of Spies 46 48 57 -9 0.0 -
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