Official NHA Assessment

Race 9: PLAY 'N GO JET MASTER STAKES (Listed) (For all Horses)

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Line Horse
Captain West
Reference for assessment
Exact Matches
4 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
4 / 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    Jet Force            3    60.0    1    0.00     4.0   115   111          111   -4
2    I Salute You         3    58.0    2    0.30     4.0   107   112          112   +5
3    Zeitz                3    54.0    3    0.60     4.0   101   104          104   +3
4    Gallic Dream         4    54.0    4    1.35     2.0   100   106          106   +6
5    Captain West         3    54.0    5    1.55     4.0   102   102          102   +0
6    Snow Pilot           2    60.0    6    2.05     0.0   122   122          122   +0
7    Otto Luyken          5    60.0    7    3.05     0.0   116   121          121   +5
8    Gem King             6    60.0    8    4.30     0.0   112   119          119   +7
9    Sugar Mountain       3    60.0    9    9.55     4.0   122   111          112   -10
99   Garrix               3    60.0    99   0.00     4.0   -     111          111   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jet Force 115 117 111 +6 4.0 -
2 I Salute You 107 112 112 ✓ Match 4.0 -
3 Zeitz 101 104 104 ✓ Match 4.0 -
4 Gallic Dream 100 102 106 -4 2.0 -
5 Captain West Line 102 102 102 ✓ Match 4.0
6 Snow Pilot 122 122 122 ✓ Match 0.0 -
7 Otto Luyken 116 116 121 -5 0.0 -
8 Gem King 112 108 119 -11 0.0 -
9 Sugar Mountain 122 122 112 +10 4.0 -
99 Garrix - 123 111 +12 4.0 -
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