Official NHA Assessment

Race 3: GRADUATION HANDICAP (Maidens,1 & 2 time winners)

Back to Race
Line Horse
Sun Bird
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Coffeeberry          5    57.5    1    0.00     0.0   67    67           67    +0
2    Bruce's Spirit       6    60.0    2    2.00     0.0   64    75           75    +11
3    Sun Bird             3    59.0    3    5.50     4.0   62    62           62    +0
4    Days Gone By         3    57.5    4    8.00     4.0   59    59           59    +0
5    Chetan               3    53.5    5    9.75     4.0   51    51           51    +0
6    Queen Of Dallas      3    52.0    6    11.25    4.0   48    48           48    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Coffeeberry 67 72 67 +5 0.0 -
2 Bruce's Spirit 64 55 75 -20 0.0 -
3 Sun Bird Line 62 87 62 +25 4.0
4 Days Gone By 59 51 59 -8 4.0 -
5 Chetan 51 45 51 -6 4.0 -
6 Queen Of Dallas 48 40 48 -8 4.0 -
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