Official NHA Assessment

Race 4: BETWAY MR 68 HANDICAP (Open)

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Line Horse
Flag Bearer
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
5 / 7
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    Eiger Sanction       3    60.0    1    0.00     9.5   70    74           70    +0
2    Callaburn            2    58.5    2    2.00     0.0   67    93           93    +26
3    Flag Bearer          3    51.5    3    2.50     9.5   59    59           59    +0
4    Streisand            3    58.5    4    5.00     9.5   84    71           74    -10
5    Rainy Season         4    52.5    5    5.50     6.0   53    66           66    +13
6    Guerilla Warfare     3    59.5    6    26.75    9.5   86    73           76    -10
99   Azucar               3    53.5    99   0.00     9.5   -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Eiger Sanction 70 79 70 +9 9.5 -
2 Callaburn 67 52 93 -41 0.0 -
3 Flag Bearer Line 59 60 59 +1 9.5
4 Streisand 84 86 74 +12 9.5 -
5 Rainy Season 53 56 66 -10 6.0 -
6 Guerilla Warfare 86 75 76 -1 9.5 -
99 Azucar - 53 61 -8 9.5 -
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