Official NHA Assessment

Race 3: WWW.TAB4RACING.COM GRADUATION PLATE (For 1 & 2 Time Winners & Maidens)

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Line Horse
I Am Giant
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
5 / 6
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    Tamarisk Tree        5    56.5    1    0.00     0.0   86    89           70    -16
2    Quantum Theory       5    60.0    2    2.25     0.0   108   99           99    -9
3    Swing Upon A Star    2    60.0    3    4.25     0.0   106   97           97    -9
4    I Am Giant           2    57.0    4    6.50     0.0   90    90           90    +0
5    Mo Jive              2    57.0    5    8.75     0.0   87    90           90    +3
6    Antigua Night        2    54.0    6    12.00    0.0   100   84           90    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tamarisk Tree 86 105 70 +35 0.0 -
2 Quantum Theory 108 112 99 +13 0.0 -
3 Swing Upon A Star 106 102 97 +5 0.0 -
4 I Am Giant Line 90 124 90 +34 0.0
5 Mo Jive 87 78 90 -12 0.0 -
6 Antigua Night 100 97 90 +7 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