Official NHA Assessment

Race 5: BOOK A TABLE CALL 011-681-1796 MR 84 HANDICAP (Open)

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Line Horse
Umthombo Wolwazi
Reference for assessment
Exact Matches
2 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
2 / 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    Mover And Shaker     5    58.0    1    0.00     0.0   87    94           87    +0
2    Umthombo Wolwazi     2    58.5    2    1.20     3.5   88    88           88    +0
3    Set To Go            2    59.0    3    1.25     3.5   89    89           89    +0
4    Bronco Blitz         3    58.5    4    8.00     5.0   81    85           85    +4
5    Quick Breeze         3    57.5    5    9.20     5.0   84    83           83    -1
6    Tre Amici            2    52.5    6    9.25     3.5   76    76           76    +0
99   Arbitrator           2    55.5    99   0.00     3.5   -     82           82    +0
99   Ridgerunner          2    59.5    99   0.00     3.5   -     90           90    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mover And Shaker 87 109 87 +22 0.0 -
2 Umthombo Wolwazi Line 88 91 88 +3 3.5
3 Set To Go 89 84 89 -5 3.5 -
4 Bronco Blitz 81 80 85 -5 5.0 -
5 Quick Breeze 84 79 83 -4 5.0 -
6 Tre Amici 76 64 76 -12 3.5 -
99 Arbitrator - 82 82 ✓ Match 3.5 -
99 Ridgerunner - 90 90 ✓ Match 3.5 -
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