Official NHA Assessment

Race 6: PinkDrive MICHAELMAS HANDICAP (Handicap - Non-Black Type)

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Line Horse
Pirate Prince
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
6 / 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    Royal Victory        5    61.5    1    0.00     0.0   108   108          108   +0
2    Pirate Prince        2    52.0    2    0.10     0.0   89    89           89    +0
3    Cape Eagle           7    58.5    3    0.20     0.0   100   102          102   +2
4    Queue Wing           7    57.5    4    1.50     0.0   98    105          105   +7
5    Addabar              3    52.5    5    2.25     9.0   90    77           80    -10
6    Fight Song           4    55.5    6    3.05     5.0   94    89           89    -5
7    Capetown Beauty      3    59.0    7    6.85     9.0   101   85           91    -10
8    Rex Union            4    57.0    8    7.15     5.0   97    89           89    -8
9    Sun Blushed          2    60.5    9    16.15    0.0   106   106          106   +0
99   Airways Law          4    61.0    99   0.00     5.0   -     97           97    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Royal Victory 108 124 108 +16 0.0 -
2 Pirate Prince Line 89 94 89 +5 0.0
3 Cape Eagle 100 106 102 +4 0.0 -
4 Queue Wing 98 81 105 -24 0.0 -
5 Addabar 90 97 80 +17 9.0 -
6 Fight Song 94 94 89 +5 5.0 -
7 Capetown Beauty 101 76 91 -15 9.0 -
8 Rex Union 97 97 89 +8 5.0 -
9 Sun Blushed 106 120 106 +14 0.0 -
99 Airways Law - 102 97 +5 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