Official NHA Assessment

Race 4: BETONTAB.CO.ZA MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Sky Velocity
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
10 / 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    Phantomoftheforest   3    60.0    1    0.00     3.0   61    64           64    +3
2    Sky Velocity         5    57.0    2    1.75     0.0   67    67           67    +0
3    Going Global         3    60.0    3    3.75     3.0   45    65           65    +20
4    Yay                  3    57.0    4    5.00     3.0   -     58           58    +58
5    Royal Raphael        3    60.0    5    5.30     3.0   66    64           64    -2
6    Carnelo              6    60.0    6    5.40     0.0   59    70           70    +11
7    Raptor Island        2    60.0    7    5.90     0.0   75    70           70    -5
8    Knights Table        3    60.0    8    7.70     3.0   -     64           64    +64
9    San Marzano          3    60.0    9    12.00    3.0   -     64           64    +64
10   Grace De Silver      3    60.0    10   13.00    3.0   -     64           64    +64
11   Flight De Grace      5    57.0    11   24.50    0.0   -     64           64    +64
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Phantomoftheforest 61 50 64 -14 3.0 -
2 Sky Velocity Line 67 57 67 -10 0.0
3 Going Global 45 50 65 -15 3.0 -
4 Yay - - 58 -58 3.0 -
5 Royal Raphael 66 54 64 -10 3.0 -
6 Carnelo 59 75 70 +5 0.0 -
7 Raptor Island 75 61 70 -9 0.0 -
8 Knights Table - 73 64 +9 3.0 -
9 San Marzano - 53 64 -11 3.0 -
10 Grace De Silver - - 64 -64 3.0 -
11 Flight De Grace - 45 64 -19 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