Official NHA Assessment

Race 2: www.tabonline.co.za MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Jam Jam
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    Jam Jam              2    60.0    1    0.00     0.0   77    77           77    +0
2    Ella's Delight       2    60.0    2    1.00     0.0   72    81           81    +9
3    F Eight              2    60.0    3    1.50     0.0   72    80           80    +8
4    Teardrop             2    60.0    4    2.75     0.0   75    79           79    +4
5    White Witch          2    60.0    5    3.15     0.0   71    79           79    +8
6    Strawberry Light     3    60.0    6    4.15     7.0   -     64           64    +64
7    Be Hopeful           3    60.0    7    7.15     7.0   -     63           63    +63
8    By Midnight          3    60.0    8    9.40     7.0   -     63           63    +63
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jam Jam Line 77 63 77 -14 0.0
2 Ella's Delight 72 71 81 -10 0.0 -
3 F Eight 72 61 80 -19 0.0 -
4 Teardrop 75 55 79 -24 0.0 -
5 White Witch 71 52 79 -27 0.0 -
6 Strawberry Light - 74 64 +10 7.0 -
7 Be Hopeful - 69 63 +6 7.0 -
8 By Midnight - 55 63 -8 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