Official NHA Assessment

Race 2: WWW.HIGHVELDRACING.CO.ZA GRADUATION PLATE (F & M) (For 1 & 2 Time Winners & Maidens (F & M))

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Line Horse
Tanzanite Queen
Reference for assessment
Exact Matches
1 / 7
Calculated = Official
Close Matches
2 / 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    Tanzanite Queen      4    60.0    1    0.00     6.0   93    93           93    +0
2    Permesso Avanti      3    57.0    2    3.00     5.0   83    89           89    +6
3    Desert Pride         4    57.5    3    9.00     6.0   76    88           88    +12
4    Abbacadabra          3    57.0    4    11.50    5.0   74    89           89    +15
5    Wokonda              3    57.0    5    14.25    5.0   80    89           89    +9
99   Remember When        3    56.5    99   0.00     5.0   -     88           88    +0
99   Top Drawer           4    55.5    99   0.00     6.0   -     84           84    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tanzanite Queen Line 93 97 93 +4 6.0
2 Permesso Avanti 83 70 89 -19 5.0 -
3 Desert Pride 76 61 88 -27 6.0 -
4 Abbacadabra 74 64 89 -25 5.0 -
5 Wokonda 80 89 89 ✓ Match 5.0 -
99 Remember When - 90 88 +2 5.0 -
99 Top Drawer - 67 84 -17 6.0 -
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