Official NHA Assessment

Race 2: Call now! Or play online. www.trackandball.co.za CONDITIONAL MAIDEN (Maidens with 3 runs or more & Nett Rating of 71 or

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Line Horse
Queen Jackson
Reference for assessment
Exact Matches
2 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
3 / 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    Fields Of Green      2    60.0    1    0.00     0.0   70    63           63    -7
2    Sky Velocity         5    58.0    2    1.20     0.0   65    63           63    -2
3    Lady Is A Champ      2    57.0    3    3.50     0.0   62    58           58    -4
4    Queen Jackson        3    56.0    4    3.75     3.0   50    50           50    +0
5    Dapperfontein        2    56.0    5    6.05     0.0   57    55           55    -2
6    What A Piddy         3    56.0    6    12.95    3.0   45    49           49    +4
99   Aleeyah's Unicorn    2    54.5    99   0.00     0.0   -     52           52    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fields Of Green 70 69 63 +6 0.0 -
2 Sky Velocity 65 57 63 -6 0.0 -
3 Lady Is A Champ 62 57 58 -1 0.0 -
4 Queen Jackson Line 50 50 50 ✓ Match 3.0
5 Dapperfontein 57 47 55 -8 0.0 -
6 What A Piddy 45 45 49 -4 3.0 -
99 Aleeyah's Unicorn - 52 52 ✓ Match 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