Official NHA Assessment

Race 4: PLAY SOCCER 6, 10 AND 13 MR 97 DIVIDED HANDICAP (Open)

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Line Horse
Otto Luyken
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
6 / 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    Willow's Wish        4    57.0    1    0.00     1.5   91    92           91    +0
2    Meridius             2    55.5    2    0.50     0.0   95    97           97    +2
3    Otto Luyken          5    52.5    3    1.75     0.0   89    89           89    +0
4    Littlemarysunshine   2    54.5    4    2.35     0.0   93    92           92    -1
5    Tamarisk Tree        5    52.0    5    4.50     0.0   88    85           85    -3
6    Supreme Dance        4    58.0    6    7.40     1.5   93    94           94    +1
7    Vanderbilt           3    60.5    7    7.50     3.5   101   95           95    -6
8    Sir Michael          5    57.0    8    14.50    0.0   91    95           95    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Willow's Wish 91 96 91 +5 1.5 -
2 Meridius 95 115 97 +18 0.0 -
3 Otto Luyken Line 89 116 89 +27 0.0
4 Littlemarysunshine 93 95 92 +3 0.0 -
5 Tamarisk Tree 88 105 85 +20 0.0 -
6 Supreme Dance 93 76 94 -18 1.5 -
7 Vanderbilt 101 103 95 +8 3.5 -
8 Sir Michael 91 81 95 -14 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