Official NHA Assessment

Race 7: BOOK NOW FOR ROYAL RACE DAY ON 16 MARCH CLASS 5 (Open. Benchmark at 60.0kg = 66)

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Line Horse
Champagne Mac
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
4 / 11
Within 2 points
Significant Diffs
3 / 11
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    Lucy Rocket          4    61.0    1    0.00     4.0   68    68           68    +0
2    Champagne Mac        4    59.0    2    0.75     4.0   64    64           64    +0
3    Shipindani           3    62.5    3    1.15     3.5   76    72           72    -4
4    Electric Feels       5    54.0    4    2.15     0.0   54    62           62    +8
5    Becky Sharp          4    60.0    5    2.55     4.0   66    66           66    +0
6    Casino Ace           5    59.5    6    4.30     0.0   65    73           73    +8
7    Penny's World        3    52.5    7    5.30     3.5   55    52           52    -3
8    Try Me               4    54.0    8    5.60     4.0   54    54           54    +0
9    Over The Atlantic    3    53.5    9    6.85     3.5   58    54           54    -4
10   Xplicit Content      4    54.5    10   7.15     4.0   55    55           55    +0
99   Golden Ideal         3    53.0    99   0.00     3.5   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Lucy Rocket 68 69 68 +1 4.0 -
2 Champagne Mac Line 64 55 64 -9 4.0
3 Shipindani 76 69 72 -3 3.5 -
4 Electric Feels 54 57 62 -5 0.0 -
5 Becky Sharp 66 68 66 +2 4.0 -
6 Casino Ace 65 56 73 -17 0.0 -
7 Penny's World 55 61 52 +9 3.5 -
8 Try Me 54 52 54 -2 4.0 -
9 Over The Atlantic 58 56 54 +2 3.5 -
10 Xplicit Content 55 58 55 +3 4.0 -
99 Golden Ideal - 56 53 +3 3.5 -
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