Official NHA Assessment

Race 4: BET WITH TABGOLD - THE INTELLIGENT BET! MR 72 HANDICAP (Open)

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Line Horse
Nightjar
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
3 / 9
Within 2 points
Significant Diffs
5 / 9
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    Shotgun Willie       3    57.5    1    0.00     7.0   67    65           67    +0
2    View Of The World    3    61.5    2    0.10     7.0   89    73           79    -10
3    Nightjar             3    58.5    3    2.00     7.0   70    70           70    +0
4    Red Mountain         4    60.5    4    4.00     3.5   74    79           79    +5
5    Bella's Pablo        3    60.0    5    5.70     7.0   73    70           70    -3
6    Bom Bom              4    58.0    6    6.50     3.5   72    73           73    +1
7    Captain Marsala      2    57.0    7    8.00     0.0   75    78           78    +3
8    Amigo                4    59.5    8    8.50     3.5   72    76           76    +4
9    Noble Warrior        4    53.5    9    14.50    3.5   60    64           64    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shotgun Willie 67 66 67 -1 7.0 -
2 View Of The World 89 78 79 -1 7.0 -
3 Nightjar Line 70 67 70 -3 7.0
4 Red Mountain 74 77 79 -2 3.5 -
5 Bella's Pablo 73 61 70 -9 7.0 -
6 Bom Bom 72 64 73 -9 3.5 -
7 Captain Marsala 75 68 78 -10 0.0 -
8 Amigo 72 64 76 -12 3.5 -
9 Noble Warrior 60 54 64 -10 3.5 -
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