Official NHA Assessment

Race 6: RACING 240 MR 66 HANDICAP (Open)

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Line Horse
Roger The Dodger
Reference for assessment
Exact Matches
1 / 14
Calculated = Official
Close Matches
2 / 14
Within 2 points
Significant Diffs
8 / 14
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    Letsdoit             3    57.0    1    0.00     4.0   69    48           69    +0
2    Roger The Dodger     5    57.0    2    0.75     0.0   60    60           60    +0
3    Brooklyn Bridge      4    57.0    3    0.90     2.5   60    55           55    -5
4    Tambora              5    61.5    4    0.95     0.0   69    69           69    +0
5    Track Commander      4    59.0    5    1.10     2.5   64    59           59    -5
6    Cherokee Chief       5    48.0    6    1.25     0.0   46    42           42    -4
7    Evening Rise         5    59.5    7    2.00     0.0   65    64           64    -1
8    Gilda Gray           3    58.5    8    2.50     4.0   72    53           62    -10
9    Zulu War Cry         4    53.0    9    3.00     2.5   52    45           45    -7
10   Cocoa Hill           3    52.0    10   3.50     4.0   59    39           49    -10
11   Invincible Wall      3    60.0    11   11.75    4.0   75    54           65    -10
12   Miss Venezuela       4    59.0    12   15.00    2.5   64    55           55    -9
99   Grindelwald          6    60.0    99   0.00     0.0   -     62           62    +0
99   Tiki Taka            6    55.0    99   0.00     0.0   -     52           52    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Letsdoit 69 72 69 +3 4.0 -
2 Roger The Dodger Line 60 51 60 -9 0.0
3 Brooklyn Bridge 60 60 55 +5 2.5 -
4 Tambora 69 69 69 ✓ Match 0.0 -
5 Track Commander 64 66 59 +7 2.5 -
6 Cherokee Chief 46 49 42 +7 0.0 -
7 Evening Rise 65 54 64 -10 0.0 -
8 Gilda Gray 72 64 62 +2 4.0 -
9 Zulu War Cry 52 53 45 +8 2.5 -
10 Cocoa Hill 59 63 49 +14 4.0 -
11 Invincible Wall 75 70 65 +5 4.0 -
12 Miss Venezuela 64 63 55 +8 2.5 -
99 Grindelwald - 70 62 +8 0.0 -
99 Tiki Taka - 48 52 -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