Official NHA Assessment

Race 2: SLEDGEHAMMER MAIDEN PLATE (For all Maidens)

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Line Horse
Plinian
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
7 / 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    Plinian              2    60.0    1    0.00     3.5   79    79           79    +0
2    Mar Del Plata        2    60.0    2    0.40     3.5   71    79           79    +8
3    Silver Savage        2    60.0    3    1.90     3.5   68    79           79    +11
4    Emerald Green        4    57.5    4    3.10     6.0   -     69           69    +69
5    Gorgeous Guy         2    60.0    5    4.70     3.5   77    79           79    +2
6    Teatime Tipple       2    60.0    6    5.40     3.5   78    79           79    +1
7    Catavar              4    60.0    7    9.40     6.0   -     74           74    +74
8    Lightning Jimmy      4    60.0    8    12.60    6.0   71    74           74    +3
9    Heart Of Thieves     4    60.0    9    12.70    6.0   59    74           74    +15
10   The Big Short        3    60.0    10   15.10    5.0   -     76           76    +76
99   Trippi T             3    60.0    99   0.00     5.0   -     76           76    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Plinian Line 79 75 79 -4 3.5
2 Mar Del Plata 71 77 79 -2 3.5 -
3 Silver Savage 68 52 79 -27 3.5 -
4 Emerald Green - 75 69 +6 6.0 -
5 Gorgeous Guy 77 81 79 +2 3.5 -
6 Teatime Tipple 78 69 79 -10 3.5 -
7 Catavar - 64 74 -10 6.0 -
8 Lightning Jimmy 71 48 74 -26 6.0 -
9 Heart Of Thieves 59 45 74 -29 6.0 -
10 The Big Short - 33 76 -43 5.0 -
99 Trippi T - 75 76 -1 5.0 -
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