Official NHA Assessment

Race 2: #YOUCANBETONUS! MAIDEN PLATE (For all Maidens)

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Line Horse
Golden Grey
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
3 / 13
Within 2 points
Significant Diffs
8 / 13
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    Cheerful Charlie B   3    60.0    1    0.00     2.0   68    57           57    -11
2    Garden Sun           3    60.0    2    0.50     2.0   66    62           62    -4
3    Golden Grey          4    60.0    3    1.75     0.5   63    63           63    +0
4    Pardon Me            5    60.0    4    3.50     0.0   50    62           62    +12
5    Fizzly Bubbly        3    57.5    5    5.50     2.0   63    52           53    -10
6    Prolific Star        3    60.0    6    7.25     2.0   67    57           57    -10
7    Sempre Bella         3    60.0    7    9.00     2.0   55    57           57    +2
8    Tower Of London      2    56.0    8    10.00    0.0   -     53           53    +53
9    Monocle              3    60.0    9    15.25    2.0   50    57           57    +7
10   Mitredat             3    60.0    10   20.00    2.0   54    57           57    +3
11   Top Dollar           5    60.0    11   25.50    0.0   47    61           61    +14
12   Matt's Warrior       2    56.5    12   26.00    0.0   -     54           54    +54
99   Pyro Edition         2    60.0    99   0.00     0.0   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cheerful Charlie B 68 61 57 +4 2.0 -
2 Garden Sun 66 69 62 +7 2.0 -
3 Golden Grey Line 63 64 63 +1 0.5
4 Pardon Me 50 53 62 -9 0.0 -
5 Fizzly Bubbly 63 70 53 +17 2.0 -
6 Prolific Star 67 64 57 +7 2.0 -
7 Sempre Bella 55 56 57 -1 2.0 -
8 Tower Of London - 70 53 +17 0.0 -
9 Monocle 50 52 57 -5 2.0 -
10 Mitredat 54 51 57 -6 2.0 -
11 Top Dollar 47 42 61 -19 0.0 -
12 Matt's Warrior - 55 54 +1 0.0 -
99 Pyro Edition - 71 61 +10 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