Official NHA Assessment

Race 5: RACING ASSOCIATION CLASSIFIED STAKES (For horses with nett rating of 74 and be)

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Line Horse
Potent Captain
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 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    Globetonic           6    56.0    1    0.00     0.0   64    66           66    +2
2    Holocene             4    60.0    2    0.10     2.5   72    69           69    -3
3    Potent Captain       4    56.5    3    2.35     2.5   64    64           64    +0
4    A Bit Chilly         3    56.0    4    3.60     4.0   75    59           65    -10
5    Mr Belvedere         4    60.0    5    5.85     2.5   74    69           69    -5
6    Son Of Erupt         2    58.0    6    6.60     0.0   77    70           70    -7
7    War Launch           2    48.0    7    8.10     0.0   53    50           50    -3
8    Sweet And True       3    60.0    8    13.10    4.0   80    66           70    -10
9    Clap Of Thunder      3    58.0    9    15.35    4.0   67    62           62    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Globetonic 64 77 66 +11 0.0 -
2 Holocene 72 76 69 +7 2.5 -
3 Potent Captain Line 64 54 64 -10 2.5
4 A Bit Chilly 75 73 65 +8 4.0 -
5 Mr Belvedere 74 55 69 -14 2.5 -
6 Son Of Erupt 77 74 70 +4 0.0 -
7 War Launch 53 50 50 ✓ Match 0.0 -
8 Sweet And True 80 77 70 +7 4.0 -
9 Clap Of Thunder 67 66 62 +4 4.0 -
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