Official NHA Assessment

Race 10: NEXT TURFFONTEIN RACEMEETING SATURDAY 18 JANUARY MR 80 HANDICAP MR 80 HANDICAP (Open)

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Line Horse
Zanthar
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
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    Vibe Sa              2    58.0    1    0.00     3.5   76    86           76    +0
2    Secret Chord         4    61.0    2    2.25     6.0   82    87           87    +5
3    Zanthar              3    60.5    3    3.00     5.0   88    88           88    +0
4    Nazare               3    55.0    4    5.50     5.0   70    77           77    +7
5    Sea Wolf             3    60.5    5    5.80     5.0   88    88           88    +0
6    Blizzard Snow        3    57.5    6    6.80     5.0   82    82           82    +0
7    Kinshin Sha          4    59.5    7    7.05     6.0   82    84           84    +2
8    Coppola              4    59.0    8    7.45     6.0   78    83           83    +5
9    Sea Shanty           4    57.0    9    7.65     6.0   74    79           79    +5
10   Big Boy Bruce        2    59.0    10   7.95     3.5   78    88           88    +10
11   Longsword            2    61.0    11   12.00    3.5   82    92           92    +10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vibe Sa 76 92 76 +16 3.5 -
2 Secret Chord 82 92 87 +5 6.0 -
3 Zanthar Line 88 80 88 -8 5.0
4 Nazare 70 70 77 -7 5.0 -
5 Sea Wolf 88 87 88 -1 5.0 -
6 Blizzard Snow 82 86 82 +4 5.0 -
7 Kinshin Sha 82 62 84 -22 6.0 -
8 Coppola 78 83 83 ✓ Match 6.0 -
9 Sea Shanty 74 71 79 -8 6.0 -
10 Big Boy Bruce 78 76 88 -12 3.5 -
11 Longsword 82 72 92 -20 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