Official NHA Assessment

Race 7: SA DERBY 4 APRIL PINNACLE STAKES (For all horses)

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Line Horse
Money Heist
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
8 / 10
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    Tin Pan Alley        2    58.0    1    0.00     0.0   116   106          106   -10
2    Money Heist          2    58.0    2    0.05     0.0   106   106          106   +0
3    Bob's Your Uncle     5    52.5    3    4.25     0.0   101   96           96    -5
4    Greaterix            3    60.0    4    5.00     5.0   112   100          102   -10
5    Radicchio            5    54.0    5    6.00     0.0   101   98           98    -3
6    Hotarubi             4    50.0    6    9.00     2.5   101   85           91    -10
7    Miss Scaletta        3    52.0    7    9.40     5.0   100   84           90    -10
8    Mover And Shaker     5    54.5    8    10.50    0.0   105   99           99    -6
9    Fire 'N Flames       4    56.0    9    11.75    2.5   105   97           97    -8
99   Pressonregardless    4    58.0    99   0.00     2.5   -     101          101   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tin Pan Alley 116 128 106 +22 0.0 -
2 Money Heist Line 106 106 106 ✓ Match 0.0
3 Bob's Your Uncle 101 103 96 +7 0.0 -
4 Greaterix 112 110 102 +8 5.0 -
5 Radicchio 101 100 98 +2 0.0 -
6 Hotarubi 101 98 91 +7 2.5 -
7 Miss Scaletta 100 96 90 +6 5.0 -
8 Mover And Shaker 105 109 99 +10 0.0 -
9 Fire 'N Flames 105 103 97 +6 2.5 -
99 Pressonregardless - 109 101 +8 2.5 -
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