Official NHA Assessment

Race 1: BETWAY INSUREBET MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Exhale
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
2 / 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    Kudzu                2    56.0    1    0.00     0.0   81    75           75    -6
2    Exhale               3    60.0    2    4.95     9.5   64    64           64    +0
3    Birthright           4    56.0    3    5.00     6.0   -     63           63    +63
4    In A Blue Moon       2    56.0    4    7.00     0.0   77    75           75    -2
5    Puerto Plata (ARG)   3    60.0    5    25.50    9.5   69    64           64    -5
6    Mr Spain             2    56.0    6    99.99    0.0   -     75           75    +75
99   The Octagon          2    56.0    99   0.00     0.0   -     75           75    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Kudzu 81 80 75 +5 0.0 -
2 Exhale Line 64 66 64 +2 9.5
3 Birthright - 95 63 +32 6.0 -
4 In A Blue Moon 77 74 75 -1 0.0 -
5 Puerto Plata (ARG) 69 68 64 +4 9.5 -
6 Mr Spain - 66 75 -9 0.0 -
99 The Octagon - 76 75 +1 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