Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Sky Velocity
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
7 / 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    Bushveld             3    59.0    1    0.00     5.0   74    57           57    -17
2    Sky Velocity         5    59.0    2    6.25     0.0   67    67           67    +0
3    Ghost Ship           3    59.0    3    8.50     5.0   -     57           57    +57
4    Nordic View          3    59.0    4    12.75    5.0   64    57           57    -7
5    Silver Princess      4    60.0    5    18.00    2.5   48    64           64    +16
6    Varsavia             3    59.0    6    99.99    5.0   -     57           57    +57
99   Voshaarnooi          2    59.0    99   0.00     0.0   -     67           67    +0
99   National Star        2    59.0    99   0.00     0.0   -     67           67    +0
99   Miss Christmas       3    59.0    99   0.00     5.0   -     57           57    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bushveld 74 56 57 -1 5.0 -
2 Sky Velocity Line 67 57 67 -10 0.0
3 Ghost Ship - 68 57 +11 5.0 -
4 Nordic View 64 59 57 +2 5.0 -
5 Silver Princess 48 50 64 -14 2.5 -
6 Varsavia - 20 57 -37 5.0 -
99 Voshaarnooi - 50 67 -17 0.0 -
99 National Star - 75 67 +8 0.0 -
99 Miss Christmas - 64 57 +7 5.0 -
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