Official NHA Assessment

Race 5: TUDOR RULLAH 1990 STRYDOM'S GREATEST RIDE MAIDEN PLATE (F & M) (For Maiden F & M)

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Line Horse
Mattiazo
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
7 / 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    Mattiazo             4    60.0    1    0.00     0.5   66    66           66    +0
2    Witching Hour        2    56.0    2    0.40     0.0   -     64           64    +64
3    Babette's Feast      2    56.0    3    0.80     0.0   -     63           63    +63
4    Falconfly            4    60.0    4    1.30     0.5   50    69           69    +19
5    Asiah's Tiara        3    58.5    5    2.50     1.0   68    64           64    -4
6    Nkwenkwezi           3    60.0    6    6.60     1.0   68    65           65    -3
7    Bella Boop Boop      3    60.0    7    7.30     1.0   63    65           65    +2
8    Amber Eyes           3    60.0    8    8.80     1.0   54    65           65    +11
9    Hot Cocoa            2    56.0    9    9.40     0.0   -     59           59    +59
99   Lady William         3    60.0    99   0.00     1.0   -     65           65    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mattiazo Line 66 69 66 +3 0.5
2 Witching Hour - 68 64 +4 0.0 -
3 Babette's Feast - 81 63 +18 0.0 -
4 Falconfly 50 73 69 +4 0.5 -
5 Asiah's Tiara 68 56 64 -8 1.0 -
6 Nkwenkwezi 68 78 65 +13 1.0 -
7 Bella Boop Boop 63 58 65 -7 1.0 -
8 Amber Eyes 54 50 65 -15 1.0 -
9 Hot Cocoa - 78 59 +19 0.0 -
99 Lady William - 59 65 -6 1.0 -
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