Official NHA Assessment

Race 5: BUSTER BARNES PINNACLE PLATE 105 (Race for all horses.)

Back to Race
Line Horse
Wantage
Reference for assessment
Exact Matches
0 / 4
Calculated = Official
Close Matches
1 / 4
Within 2 points
Significant Diffs
3 / 4
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Abayyaan             3    60.0    1    0.00     3.0   102   95           95    -7
2    Wantage              8    54.0    2    1.25     0.0   89    89           89    +0
3    Captive Moon         6    54.0    3    1.50     0.0   86    89           89    +3
4    Var Aglow            5    58.0    4    2.25     0.0   96    97           97    +1
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Abayyaan 102 94 95 -1 3.0 -
2 Wantage Line 89 78 89 -11 0.0
3 Captive Moon 86 75 89 -14 0.0 -
4 Var Aglow 96 84 97 -13 0.0 -
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