Official NHA Assessment

Race 5: MOBILE BETTING VISIT www.trackandball.co.za MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Sayulita
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
3 / 9
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    Sayulita             2    59.0    1    0.00     0.0   69    69           69    +0
2    Gelsomina            3    60.0    2    1.90     5.0   53    64           64    +11
3    Samsai               3    56.5    3    4.80     5.0   55    54           54    -1
4    Venetian Link        3    59.0    4    5.40     5.0   -     59           59    +59
5    Free Will            3    59.0    5    5.80     5.0   -     59           59    +59
6    Delilah's Gold       3    56.5    6    5.90     5.0   64    54           54    -10
99   Kittyboys Girl       2    59.0    99   0.00     0.0   -     69           69    +0
99   La Voleuse           3    59.0    99   0.00     5.0   -     59           59    +0
99   Chelsea Blue         3    59.0    99   0.00     5.0   -     59           59    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sayulita Line 69 64 69 -5 0.0
2 Gelsomina 53 55 64 -9 5.0 -
3 Samsai 55 53 54 -1 5.0 -
4 Venetian Link - 58 59 -1 5.0 -
5 Free Will - 49 59 -10 5.0 -
6 Delilah's Gold 64 51 54 -3 5.0 -
99 Kittyboys Girl - 59 69 -10 0.0 -
99 La Voleuse - 56 59 -3 5.0 -
99 Chelsea Blue - 60 59 +1 5.0 -
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