Official NHA Assessment

Race 6: RACING TODAY MR 66 HANDICAP (Open)

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Line Horse
Stroke Of Mercy
Reference for assessment
Exact Matches
1 / 13
Calculated = Official
Close Matches
3 / 13
Within 2 points
Significant Diffs
5 / 13
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Thunderbird          4    61.5    1    0.00     1.5   69    70           69    +0
2    Stroke Of Mercy      5    52.0    2    1.25     0.0   58    58           58    +0
3    Can't Catch Me       5    52.5    3    1.50     0.0   51    58           58    +7
4    Silky Jet            4    59.0    4    1.75     1.5   64    68           68    +4
5    Perini Palace        4    57.0    5    4.15     1.5   60    62           62    +2
6    Bob Lee Swagger      4    55.0    6    4.25     1.5   56    58           58    +2
7    Gimme The Flame      5    53.0    7    5.25     0.0   52    56           56    +4
8    Time For Charity     5    58.0    8    9.50     0.0   62    66           66    +4
9    Gal Gadot            8    52.5    9    10.00    0.0   50    55           55    +5
10   Breath Of Magic      4    57.0    10   12.50    1.5   60    61           61    +1
11   Lady Majorca         4    59.5    11   15.00    1.5   65    66           66    +1
99   Chicago Lass         6    54.5    99   0.00     0.0   -     59           59    +0
99   Southern Style       5    54.0    99   0.00     0.0   -     58           58    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Thunderbird 69 70 69 +1 1.5 -
2 Stroke Of Mercy Line 58 52 58 -6 0.0
3 Can't Catch Me 51 58 58 ✓ Match 0.0 -
4 Silky Jet 64 61 68 -7 1.5 -
5 Perini Palace 60 56 62 -6 1.5 -
6 Bob Lee Swagger 56 53 58 -5 1.5 -
7 Gimme The Flame 52 50 56 -6 0.0 -
8 Time For Charity 62 61 66 -5 0.0 -
9 Gal Gadot 50 50 55 -5 0.0 -
10 Breath Of Magic 60 60 61 -1 1.5 -
11 Lady Majorca 65 62 66 -4 1.5 -
99 Chicago Lass - 43 59 -16 0.0 -
99 Southern Style - 54 58 -4 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