Official NHA Assessment

Race 5: BIDVEST PROGRESS PLATE (1,2 & 3 time winners)

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Line Horse
Fostinovo
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
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    Zinovi               2    53.0    1    0.00     0.0   96    93           93    -3
2    Princeofgreen        2    52.5    2    4.75     0.0   88    92           92    +4
3    Fostinovo            3    58.0    3    5.50     8.0   87    87           87    +0
4    Calida               2    53.0    4    6.00     0.0   85    93           93    +8
5    Star Coin            5    60.5    5    6.60     0.0   109   108          108   -1
6    Billy Spellbound     2    55.0    6    7.00     0.0   83    97           97    +14
7    Sister Light         3    58.0    7    7.25     8.0   90    87           87    -3
8    Smorgasbord          6    56.5    8    8.75     0.0   108   100          100   -8
99   Shoemaker            2    61.0    99   0.00     0.0   -     109          109   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Zinovi 96 120 93 +27 0.0 -
2 Princeofgreen 88 87 92 -5 0.0 -
3 Fostinovo Line 87 80 87 -7 8.0
4 Calida 85 72 93 -21 0.0 -
5 Star Coin 109 78 108 -30 0.0 -
6 Billy Spellbound 83 73 97 -24 0.0 -
7 Sister Light 90 96 87 +9 8.0 -
8 Smorgasbord 108 77 100 -23 0.0 -
99 Shoemaker - 109 109 ✓ 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