Official NHA Assessment

Race 1: 4RACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Someday Maybe
Reference for assessment
Exact Matches
3 / 12
Calculated = Official
Close Matches
5 / 12
Within 2 points
Significant Diffs
4 / 12
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    Perini Palace        4    60.0    1    0.00     12.0  54    56           56    +2
2    Bellissivar          2    58.0    2    0.40     7.0   76    62           66    -10
3    Miss Munroe          2    58.0    3    0.90     7.0   75    62           65    -10
4    Black Hole Sun       4    60.0    4    1.00     12.0  48    56           56    +8
5    Someday Maybe        3    60.0    5    3.25     10.5  59    59           59    +0
6    Basingstoke          2    58.0    6    6.50     7.0   -     62           62    +62
7    Q For Love           3    58.0    7    7.00     10.5  -     55           55    +55
8    Intro                3    58.0    8    8.50     10.5  76    55           66    -10
9    Ruby Rebel           3    58.0    9    11.50    10.5  -     55           55    +55
10   Lunar Rainbow        3    58.5    10   16.00    10.5  -     56           56    +56
99   Golden Argo          3    60.0    99   0.00     10.5  -     59           59    +0
99   Cyber Spirit         2    58.0    99   0.00     7.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Perini Palace 54 56 56 ✓ Match 12.0 -
2 Bellissivar 76 73 66 +7 7.0 -
3 Miss Munroe 75 75 65 +10 7.0 -
4 Black Hole Sun 48 53 56 -3 12.0 -
5 Someday Maybe Line 59 56 59 -3 10.5
6 Basingstoke - 72 62 +10 7.0 -
7 Q For Love - 60 55 +5 10.5 -
8 Intro 76 66 66 ✓ Match 10.5 -
9 Ruby Rebel - 80 55 +25 10.5 -
10 Lunar Rainbow - 57 56 +1 10.5 -
99 Golden Argo - 61 59 +2 10.5 -
99 Cyber Spirit - 62 62 ✓ Match 7.0 -
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