Official NHA Assessment

Race 3: TAB TELEBET 0861 000 822 MAIDEN PLATE (For all Maidens)

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Line Horse
Irish Sea
Reference for assessment
Exact Matches
2 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
9 / 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    Lord Marmite         4    60.0    1    0.00     1.5   56    61           61    +5
2    ChampagneSocialist   4    60.0    2    0.50     1.5   55    66           66    +11
3    Irish Sea            3    60.0    3    2.75     3.0   60    60           60    +0
4    St Patrick's Day     4    55.5    4    5.50     1.5   53    52           52    -1
5    Grace Lightning      3    57.0    5    6.00     3.0   64    52           54    -10
6    Super Fun            3    60.0    6    6.50     3.0   61    58           58    -3
7    Boy Named Sue        3    60.0    7    7.75     3.0   60    58           58    -2
8    Power Surge          3    60.0    8    10.00    3.0   -     58           58    +58
9    Freezing Fast        5    60.0    9    10.05    0.0   52    64           64    +12
10   Mr Linebreaker       3    60.0    10   13.80    3.0   65    58           58    -7
11   Zero Rate            5    60.0    11   15.80    0.0   55    64           64    +9
12   Twice The Dice       3    60.0    12   99.98    3.0   10    58           58    +48
99   Jacksonville         3    60.0    99   0.00     3.0   -     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 Lord Marmite 56 44 61 -17 1.5 -
2 ChampagneSocialist 55 57 66 -9 1.5 -
3 Irish Sea Line 60 52 60 -8 3.0
4 St Patrick's Day 53 42 52 -10 1.5 -
5 Grace Lightning 64 60 54 +6 3.0 -
6 Super Fun 61 58 58 ✓ Match 3.0 -
7 Boy Named Sue 60 54 58 -4 3.0 -
8 Power Surge - 53 58 -5 3.0 -
9 Freezing Fast 52 44 64 -20 0.0 -
10 Mr Linebreaker 65 58 58 ✓ Match 3.0 -
11 Zero Rate 55 42 64 -22 0.0 -
12 Twice The Dice 10 20 58 -38 3.0 -
99 Jacksonville - 65 58 +7 3.0 -
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