Official NHA Assessment

Race 6: 4RACING.TV PROGRESS PLATE (1,2 & 3 time winners & Maidens)

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Line Horse
Paisley Park
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
7 / 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    Florentine           4    55.0    1    0.00     1.5   80    82           70    -10
2    Miss Elegance        4    55.0    2    0.10     1.5   99    82           89    -10
3    Paisley Park         4    61.0    3    1.10     1.5   98    98           98    +0
4    Lulu's Boy           5    54.5    4    3.00     0.0   64    86           86    +22
5    Bold Jazz            4    61.0    5    4.25     1.5   92    95           95    +3
6    Noble Striker        3    61.0    6    6.75     2.5   100   92           92    -8
7    Foreign Field        4    60.0    7    8.75     1.5   86    92           92    +6
8    Zuzan                3    57.0    8    10.50    2.5   89    84           84    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Florentine 80 86 70 +16 1.5 -
2 Miss Elegance 99 91 89 +2 1.5 -
3 Paisley Park Line 98 91 98 -7 1.5
4 Lulu's Boy 64 71 86 -15 0.0 -
5 Bold Jazz 92 83 95 -12 1.5 -
6 Noble Striker 100 98 92 +6 2.5 -
7 Foreign Field 86 73 92 -19 1.5 -
8 Zuzan 89 98 84 +14 2.5 -
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