Official NHA Assessment

Race 5: BOOK A TABLE CALL 0116811796 MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
None identified
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
8 / 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    New Mexico           2    60.0    1    0.00     0.5   -     -            -     +0
2    Policy Of Truth      2    57.0    2    0.05     0.5   -     -            -     +0
3    Viva Spirit          2    57.0    3    2.25     0.5   -     -            -     +0
4    Care Taker           4    57.0    4    2.55     2.0   -     -            -     +0
5    Callaburn            2    57.0    5    2.85     0.5   -     -            -     +0
6    Levitator            5    57.5    6    3.25     0.0   45    -            40    -5
7    Daring Act           4    57.0    7    3.55     2.0   -     -            -     +0
8    Sugar Blast          2    57.0    8    4.50     0.5   -     -            -     +0
99   Striking Angel       2    54.5    99   0.00     0.5   -     -            -     +0
99   Exhale               3    60.0    99   0.00     1.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 New Mexico - 83 - +83 0.5 -
2 Policy Of Truth - 71 - +71 0.5 -
3 Viva Spirit - 72 - +72 0.5 -
4 Care Taker - 76 - +76 2.0 -
5 Callaburn - 52 - +52 0.5 -
6 Levitator 45 60 40 +20 0.0 -
7 Daring Act - 60 - +60 2.0 -
8 Sugar Blast - 102 - +102 0.5 -
99 Striking Angel - 68 - - 0.5 -
99 Exhale - 66 - - 1.5 -
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