Official NHA Assessment

Race 1: SPIN WITH THE BEST WSB MAIDEN PLATE (All Maidens.R40000 Win bonus ROA Members)

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Line Horse
Fort Lauderdale
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 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    Cosmic Star          3    60.0    1    0.00     3.0   -     69           6     +6
2    Fort Lauderdale      2    60.0    2    3.00     2.0   71    71           71    +0
3    Royal Guide          4    58.5    3    6.75     3.5   -     65           65    +65
4    Full Go              6    60.0    4    7.95     0.0   61    75           75    +14
5    Mia Fiore            4    57.5    5    8.00     3.5   -     63           63    +63
6    Mayor Of Merrivale   2    60.0    6    9.00     2.0   71    71           71    +0
7    Pike Place           3    60.0    7    9.10     3.0   -     69           69    +69
8    Sagan                3    60.0    8    38.00    3.0   -     69           69    +69
99   Happy Vibes          3    57.5    99   0.00     3.0   -     64           64    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cosmic Star - 105 6 +99 3.0 -
2 Fort Lauderdale Line 71 85 71 +14 2.0
3 Royal Guide - 87 65 +22 3.5 -
4 Full Go 61 59 75 -16 0.0 -
5 Mia Fiore - 77 63 +14 3.5 -
6 Mayor Of Merrivale 71 59 71 -12 2.0 -
7 Pike Place - 57 69 -12 3.0 -
8 Sagan - 70 69 +1 3.0 -
99 Happy Vibes - 59 64 -5 3.0 -
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