Official NHA Assessment

Race 3: JOAN RUFFEL MIDDLE STAKES (For horses with nett rating of 92 and below)

Back to Race
Line Horse
Corvette Captain
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
1 / 6
Within 2 points
Significant Diffs
4 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Tuscan Winter        4    58.0    1    0.00     12.0  86    58           58    -28
2    Far Away Winter      2    54.0    2    1.25     7.0   90    60           80    -10
3    Corvette Captain     5    52.0    3    1.80     0.0   70    70           70    +0
4    Whorly Whorly        7    60.0    4    5.00     0.0   90    86           86    -4
5    Letsdoit             3    54.5    5    12.00    10.5  81    54           71    -10
99   Vasilikos            2    52.0    99   0.00     7.0   -     56           56    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tuscan Winter 86 90 58 +32 12.0 -
2 Far Away Winter 90 99 80 +19 7.0 -
3 Corvette Captain Line 70 75 70 +5 0.0
4 Whorly Whorly 90 78 86 -8 0.0 -
5 Letsdoit 81 72 71 +1 10.5 -
99 Vasilikos - 67 56 +11 7.0 -
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