Official NHA Assessment

Race 5: RACING240 MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Perilla
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 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    Quickstep            2    56.0    1    0.00     0.0   -     -3           -     +0
2    Perilla              5    56.0    2    2.00     0.0   -     -            -     +0
3    Air Of Royalty       3    60.0    3    2.30     1.5   -     4            4     +4
4    Senhora Victoria     3    60.0    4    3.05     1.5   67    4            57    -10
5    Short Sharp Shock    3    60.0    5    3.25     1.5   56    4            46    -10
6    The Heat Is On       3    60.0    6    3.30     1.5   69    3            59    -10
7    Island Beauty        3    60.0    7    4.80     1.5   -     2            2     +2
8    Ravages Of War       2    56.0    8    9.55     0.0   -     -3           -     +0
9    Blue Eyed Girl       3    60.0    9    24.80    1.5   67    2            57    -10
99   Touch Of Grace       3    60.0    99   0.00     1.5   -     2            2     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Quickstep - 76 - +76 0.0 -
2 Perilla Line - 89 - +89 0.0
3 Air Of Royalty - 55 4 +51 1.5 -
4 Senhora Victoria 67 66 57 +9 1.5 -
5 Short Sharp Shock 56 62 46 +16 1.5 -
6 The Heat Is On 69 71 59 +12 1.5 -
7 Island Beauty - 63 2 +61 1.5 -
8 Ravages Of War - - - ✓ Match 0.0 -
9 Blue Eyed Girl 67 67 57 +10 1.5 -
99 Touch Of Grace - 76 2 +74 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