Official NHA Assessment

Race 4: BOOK FOR SPRING SPREE 2 SEPTEMBER MAIDEN PLATE (3-year-olds) (For Maiden 3-year-olds. R15 000 Win bonus ROA Members)

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Line Horse
Purple Pitcher
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
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    Purple Pitcher       4    60.0    1    0.00     7.0   86    86           86    +0
2    Scarlett Pimpernel   2    60.0    2    2.25     0.0   78    103          103   +25
3    In A Blue Moon       2    60.0    3    6.50     0.0   78    100          100   +22
4    I Spied              2    60.0    4    8.50     0.0   -     100          100   +100
5    Kudzu                2    60.0    5    12.00    0.0   -     100          100   +100
6    Feel All Right       2    60.0    6    14.25    0.0   82    100          100   +18
7    Battle Of Kursk      2    60.0    7    14.75    0.0   77    100          100   +23
8    Mister Whistle       4    60.0    8    24.75    7.0   -     86           86    +86
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Purple Pitcher Line 86 121 86 +35 7.0
2 Scarlett Pimpernel 78 90 103 -13 0.0 -
3 In A Blue Moon 78 74 100 -26 0.0 -
4 I Spied - 83 100 -17 0.0 -
5 Kudzu - 80 100 -20 0.0 -
6 Feel All Right 82 70 100 -30 0.0 -
7 Battle Of Kursk 77 76 100 -24 0.0 -
8 Mister Whistle - 52 86 -34 7.0 -
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