Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Archimides
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Pontiac              3    60.0    1    0.00     2.5   -     74           6     +6
2    We Are The Logans    2    56.0    2    3.25     0.0   -     73           73    +73
3    Archimides           3    60.0    3    5.50     2.5   74    74           74    +0
4    Viva De Janeiro      5    60.0    4    6.00     0.0   -     79           79    +79
5    King's Express       3    60.0    5    8.25     2.5   -     74           74    +74
6    Big Five             3    60.0    6    8.70     2.5   55    74           74    +19
7    Going Global         3    60.0    7    8.75     2.5   52    74           74    +22
8    Master Of Defense    3    60.0    8    10.50    2.5   60    74           74    +14
9    Cash Slip            2    60.0    9    17.00    0.0   65    79           79    +14
99   Palindrome           3    60.0    99   0.00     2.5   -     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 Pontiac - 79 6 +73 2.5 -
2 We Are The Logans - 73 73 ✓ Match 0.0 -
3 Archimides Line 74 70 74 -4 2.5
4 Viva De Janeiro - 50 79 -29 0.0 -
5 King's Express - 102 74 +28 2.5 -
6 Big Five 55 53 74 -21 2.5 -
7 Going Global 52 50 74 -24 2.5 -
8 Master Of Defense 60 63 74 -11 2.5 -
9 Cash Slip 65 58 79 -21 0.0 -
99 Palindrome - - 74 -74 2.5 -
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