Official NHA Assessment

Race 3: BETWAY MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Instant Attraction
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
3 / 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    Greenhouse           3    58.0    1    0.00     8.0   -     3            3     +3
2    Saudi Sweep          3    58.0    2    0.75     8.0   78    7            68    -10
3    Asiah's Tiara        3    58.0    3    2.25     8.0   -     6            6     +6
4    Instant Attraction   3    55.5    4    2.75     8.0   -     -            -     +0
5    Faithful Mistress    3    58.0    5    3.75     8.0   -     4            4     +4
6    Bella's Charm        3    58.0    6    4.50     8.0   70    3            60    -10
7    Villa Semaya         2    60.0    7    5.00     0.0   53    23           43    -10
8    African Beauty       2    58.5    8    9.50     0.0   75    20           65    -10
99   Explosive Gift       3    58.0    99   0.00     8.0   -     3            3     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Greenhouse - 73 3 +70 8.0 -
2 Saudi Sweep 78 68 68 ✓ Match 8.0 -
3 Asiah's Tiara - 56 6 +50 8.0 -
4 Instant Attraction Line - 60 - +60 8.0
5 Faithful Mistress - 70 4 +66 8.0 -
6 Bella's Charm 70 59 60 -1 8.0 -
7 Villa Semaya 53 59 43 +16 0.0 -
8 African Beauty 75 66 65 +1 0.0 -
99 Explosive Gift - 56 3 +53 8.0 -
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