Official NHA Assessment

Race 1: JERMAINE CRAIG MEMORIAL MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Play With Fire
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
1 / 7
Within 2 points
Significant Diffs
4 / 7
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    Happy Mo             3    60.0    1    0.00     3.0   74    71           71    -3
2    Play With Fire       4    60.0    2    5.00     1.5   74    74           74    +0
3    Ceuta                4    60.0    3    5.75     1.5   -     74           74    +74
4    City Lights          4    60.0    4    6.50     1.5   69    74           74    +5
5    Springer             2    60.0    5    7.25     0.0   78    77           77    -1
6    Cherry Oh Baby       4    60.0    6    9.25     1.5   -     74           74    +74
7    Lady Lennox          2    60.0    7    31.25    0.0   66    77           77    +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Happy Mo 74 89 71 +18 3.0 -
2 Play With Fire Line 74 79 74 +5 1.5
3 Ceuta - 97 74 +23 1.5 -
4 City Lights 69 52 74 -22 1.5 -
5 Springer 78 75 77 -2 0.0 -
6 Cherry Oh Baby - 78 74 +4 1.5 -
7 Lady Lennox 66 63 77 -14 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