Official NHA Assessment

Race 5: TAB 4RACING APP NOVICE HANDICAP (Maidens & 1 time winners)

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Line Horse
Corapi
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
5 / 7
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    Kentallen Bay        2    57.5    1    0.00     0.0   83    81           83    +0
2    Corapi               3    59.5    2    2.25     8.5   71    71           71    +0
3    Ridge To Reef        3    60.0    3    5.75     8.5   72    69           69    -3
4    Brenden James        6    59.5    4    6.75     0.0   79    85           85    +6
5    Tara Iti             4    52.0    5    6.80     6.0   48    58           58    +10
6    Super Secret         2    55.5    6    7.75     0.0   79    77           77    -2
99   Cross Examiner       3    56.0    99   0.00     8.5   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kentallen Bay 83 90 83 +7 0.0 -
2 Corapi Line 71 67 71 -4 8.5
3 Ridge To Reef 72 70 69 +1 8.5 -
4 Brenden James 79 98 85 +13 0.0 -
5 Tara Iti 48 52 58 -6 6.0 -
6 Super Secret 79 50 77 -27 0.0 -
99 Cross Examiner - 50 61 -11 8.5 -
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