Official NHA Assessment

Race 7: RACEHORSE OWNERS ASSOCIATION MR 100 OPEN HANDICAP (3-year-olds) (Open)

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Line Horse
Sunshine Day
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
7 / 9
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    Princeofgreen        2    54.0    1    0.00     0.0   88    91           88    +0
2    Command Pilot        2    55.0    2    0.05     0.0   90    93           93    +3
3    Sunshine Day         4    55.0    3    1.50     3.0   90    90           90    +0
4    Wyzeact              4    58.5    4    1.60     3.0   97    97           97    +0
5    San Simon            3    53.0    5    3.00     6.0   86    79           79    -7
6    Whirlybird           2    54.0    6    3.75     0.0   88    92           92    +4
7    Leaving Las Vegas    2    60.0    7    5.00     0.0   100   103          103   +3
8    Chasing Happiness    3    54.0    8    7.75     6.0   88    79           79    -9
9    Longsword            2    54.0    9    9.00     0.0   88    91           91    +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Princeofgreen 88 87 88 -1 0.0 -
2 Command Pilot 90 93 93 ✓ Match 0.0 -
3 Sunshine Day Line 90 69 90 -21 3.0
4 Wyzeact 97 86 97 -11 3.0 -
5 San Simon 86 86 79 +7 6.0 -
6 Whirlybird 88 73 92 -19 0.0 -
7 Leaving Las Vegas 100 89 103 -14 0.0 -
8 Chasing Happiness 88 110 79 +31 6.0 -
9 Longsword 88 72 91 -19 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