Official NHA Assessment

Race 4: PINNACLE PLATE 100 (Race for all horses)

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Line Horse
First Wish
Reference for assessment
Exact Matches
2 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
2 / 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    First Wish           3    51.5    1    0.00     3.0   86    86           86    +0
2    Hair Trigger         2    50.5    2    1.00     2.0   76    86           86    +10
3    Zafar                3    50.0    3    2.75     3.0   78    83           83    +5
4    Ultimate Jewel       5    52.0    4    2.80     0.0   80    93           93    +13
5    Tom's Diner          4    56.0    5    4.55     3.5   94    94           94    +0
6    Guerra               4    54.0    6    6.05     3.5   86    90           90    +4
7    Jet Mirage           3    60.0    7    6.30     3.0   100   103          103   +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 First Wish Line 86 86 86 ✓ Match 3.0
2 Hair Trigger 76 76 86 -10 2.0 -
3 Zafar 78 78 83 -5 3.0 -
4 Ultimate Jewel 80 80 93 -13 0.0 -
5 Tom's Diner 94 94 94 ✓ Match 3.5 -
6 Guerra 86 86 90 -4 3.5 -
7 Jet Mirage 100 100 103 -3 3.0 -
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