Official NHA Assessment

Race 4: BETWAY BACK THE BOKS MAIDEN PLATE (3 year-olds) (For Maiden 3 year-olds R15 000 WIN BONUS RA MEMBERS)

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Line Horse
Mvelelo
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
4 / 11
Within 2 points
Significant Diffs
6 / 11
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    House Of Romanov     2    60.0    1    0.00     0.0   87    82           82    -5
2    Birthright           4    60.0    2    2.20     6.0   -     73           73    +73
3    I Spied              2    60.0    3    2.25     0.0   74    85           85    +11
4    Kudzu                2    60.0    4    4.00     0.0   -     83           83    +83
5    Mvelelo              2    60.0    5    4.50     0.0   82    82           82    +0
6    Royal Edition        4    60.0    6    4.80     6.0   88    70           78    -10
7    Holocene             4    60.0    7    6.00     6.0   78    70           70    -8
8    Sovereigns Call      4    60.0    8    13.00    6.0   -     70           70    +70
9    Animal Impact        4    60.0    9    14.00    6.0   -     70           70    +70
10   Thomas Rainwater     2    60.0    10   17.25    0.0   -     82           82    +82
11   Pearl Harbor         2    60.0    11   99.99    0.0   73    82           82    +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 House Of Romanov 87 81 82 -1 0.0 -
2 Birthright - 95 73 +22 6.0 -
3 I Spied 74 83 85 -2 0.0 -
4 Kudzu - 80 83 -3 0.0 -
5 Mvelelo Line 82 84 82 +2 0.0
6 Royal Edition 88 92 78 +14 6.0 -
7 Holocene 78 76 70 +6 6.0 -
8 Sovereigns Call - 70 70 ✓ Match 6.0 -
9 Animal Impact - 64 70 -6 6.0 -
10 Thomas Rainwater - 58 82 -24 0.0 -
11 Pearl Harbor 73 62 82 -20 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