Official NHA Assessment

Race 5: SUPERIOR PLATE (Open)

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Line Horse
Ultimate Jewel
Reference for assessment
Exact Matches
0 / 5
Calculated = Official
Close Matches
0 / 5
Within 2 points
Significant Diffs
4 / 5
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    Outofthedarkness     3    51.0    1    0.00     6.0   101   52           52    -49
2    Tom's Diner          4    60.0    2    1.50     3.5   90    78           80    -10
3    Ultimate Jewel       5    57.5    3    7.50     0.0   77    77           77    +0
4    Empire Blue          4    51.0    4    9.25     3.5   71    57           61    -10
5    Power Ranger         7    59.5    5    17.25    0.0   70    81           81    +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Outofthedarkness 101 101 52 +49 6.0 -
2 Tom's Diner 90 94 80 +14 3.5 -
3 Ultimate Jewel Line 77 80 77 +3 0.0
4 Empire Blue 71 71 61 +10 3.5 -
5 Power Ranger 70 69 81 -12 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