Official NHA Assessment

Race 5: RACEHORSE OWNERS ASSOCIATION PINNACLE STAKES (For all horses)

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Line Horse
Sound Of Summer
Reference for assessment
Exact Matches
1 / 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    Sovereign Spirit     6    60.0    1    0.00     0.0   112   108          108   -4
2    Sound Of Summer      4    56.0    2    1.00     0.5   103   103          103   +0
3    Outofthedarkness     3    56.0    3    1.40     1.0   108   101          101   -7
4    ExpressFromTheUS     5    56.0    4    3.25     0.0   103   102          102   -1
5    Castletown           3    56.0    5    3.30     1.0   106   99           99    -7
6    Golden Tune          5    52.0    6    3.50     0.0   73    93           93    +20
7    Dr Doolittle         4    56.0    7    13.50    0.5   106   99           99    -7
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sovereign Spirit 112 106 108 -2 0.0 -
2 Sound Of Summer Line 103 99 103 -4 0.5
3 Outofthedarkness 108 101 101 ✓ Match 1.0 -
4 ExpressFromTheUS 103 98 102 -4 0.0 -
5 Castletown 106 90 99 -9 1.0 -
6 Golden Tune 73 68 93 -25 0.0 -
7 Dr Doolittle 106 103 99 +4 0.5 -
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