Official NHA Assessment

Race 9: NEXT TURFFONTEIN RACEMEETING SATURDAY 10 SEPTEMBER MR 80 HANDICAP (Open)

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Line Horse
Sequoia
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
7 / 10
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    Bey Suyay            4    59.0    1    0.00     6.0   78    66           78    +0
2    Legislate's Dance    4    59.0    2    0.30     6.0   78    71           71    -7
3    Sequoia              6    56.5    3    3.30     0.0   74    74           74    +0
4    Blonde Act           3    53.0    4    3.60     8.5   67    50           57    -10
5    Ablaan               3    61.5    5    3.80     8.5   84    67           74    -10
6    Foreign Field        4    60.5    6    4.10     6.0   81    70           71    -10
7    Astrocyte            3    59.0    7    6.85     8.5   79    61           69    -10
8    Ballon D'or          5    57.0    8    9.45     0.0   82    74           74    -8
9    Toffas               3    58.5    9    11.20    8.5   78    60           68    -10
10   About To Storm       3    60.5    10   99.99    8.5   82    64           72    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bey Suyay 78 84 78 +6 6.0 -
2 Legislate's Dance 78 81 71 +10 6.0 -
3 Sequoia Line 74 99 74 +25 0.0
4 Blonde Act 67 96 57 +39 8.5 -
5 Ablaan 84 75 74 +1 8.5 -
6 Foreign Field 81 73 71 +2 6.0 -
7 Astrocyte 79 69 69 ✓ Match 8.5 -
8 Ballon D'or 82 61 74 -13 0.0 -
9 Toffas 78 74 68 +6 8.5 -
10 About To Storm 82 82 72 +10 8.5 -
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