Official NHA Assessment

Race 2: GOLD CIRCLE RACING YOUTUBE CHANNEL MR 63 HANDICAP (Open)

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Line Horse
Vengeance Forever
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
6 / 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    National Dream       6    54.0    1    0.00     0.0   50    54           50    +0
2    Arrow's Mark         6    56.0    2    3.40     0.0   55    61           61    +6
3    Vengeance Forever    3    58.0    3    4.10     2.5   59    59           59    +0
4    Safe Space           5    60.0    4    4.60     0.0   68    67           67    -1
5    Queen Britanna       2    56.5    5    5.30     0.0   60    59           59    -1
6    Twice As Perfect     3    56.5    6    5.70     2.5   61    54           54    -7
7    Chelsea Flower       6    59.5    7    6.40     0.0   65    65           65    +0
8    Cerulean Dancer      2    56.0    8    8.30     0.0   59    58           58    -1
9    Guiseppi's Song      4    59.5    9    12.70    1.0   62    63           63    +1
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 National Dream 50 68 50 +18 0.0 -
2 Arrow's Mark 55 54 61 -7 0.0 -
3 Vengeance Forever Line 59 51 59 -8 2.5
4 Safe Space 68 83 67 +16 0.0 -
5 Queen Britanna 60 57 59 -2 0.0 -
6 Twice As Perfect 61 54 54 ✓ Match 2.5 -
7 Chelsea Flower 65 77 65 +12 0.0 -
8 Cerulean Dancer 59 71 58 +13 0.0 -
9 Guiseppi's Song 62 60 63 -3 1.0 -
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