Official NHA Assessment

Race 4: THREE TO TANGO MERIT RATED 85 HANDICAP (Open)

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Line Horse
Ultimate Jewel
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
2 / 6
Within 2 points
Significant Diffs
1 / 6
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    Admirals Chance      5    59.0    1    0.00     0.0   83    83           83    +0
2    Ultimate Jewel       5    60.0    2    2.00     0.0   85    85           85    +0
3    Queen Of Fire        3    54.0    3    2.10     5.0   80    63           70    -10
4    Kallipos             3    55.0    4    3.85     5.0   75    65           65    -10
5    Battle Of Seattle    2    53.0    5    7.85     3.5   71    64           64    -7
6    Nandine              3    54.5    6    9.10     5.0   74    64           64    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Admirals Chance 83 77 83 -6 0.0 -
2 Ultimate Jewel Line 85 80 85 -5 0.0
3 Queen Of Fire 80 71 70 +1 5.0 -
4 Kallipos 75 63 65 -2 5.0 -
5 Battle Of Seattle 71 59 64 -5 3.5 -
6 Nandine 74 60 64 -4 5.0 -
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