Official NHA Assessment

Race 7: GUINEAS DAY 5 FEBRUARY GRADUATION PLATE (F & M) (Maidens,1 & 2 time winners (F & M))

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Line Horse
Supreme Quest
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
5 / 8
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    Bold Act             3    59.0    1    0.00     5.0   100   99           78    -22
2    Supreme Quest        3    59.0    2    1.30     5.0   102   102          102   +0
3    Prairie Falcon       3    56.0    3    1.70     5.0   86    96           96    +10
4    Hollywoodbound       3    59.0    4    2.80     5.0   94    101          101   +7
5    Splash Of Green      3    50.0    5    3.05     5.0   80    83           83    +3
6    Lemon Delight        4    60.0    6    4.05     2.5   96    107          107   +11
7    Lilliana             3    59.0    7    12.30    5.0   84    99           99    +15
99   Sister Light         3    56.0    99   0.00     5.0   -     93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bold Act 100 77 78 -1 5.0 -
2 Supreme Quest Line 102 92 102 -10 5.0
3 Prairie Falcon 86 78 96 -18 5.0 -
4 Hollywoodbound 94 101 101 ✓ Match 5.0 -
5 Splash Of Green 80 56 83 -27 5.0 -
6 Lemon Delight 96 96 107 -11 2.5 -
7 Lilliana 84 71 99 -28 5.0 -
99 Sister Light - 96 93 +3 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