Official NHA Assessment

Race 1: QUICKWOOD MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

Back to Race
Line Horse
Shikoku
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
7 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Arden Park           3    60.0    1    0.00     2.0   -     -4           -     +0
2    Shikoku              3    60.0    2    0.75     2.0   -     -            -     +0
3    High Flyby           3    60.0    3    3.00     2.0   68    -2           58    -10
4    Oceans Pride         7    60.0    4    3.70     0.0   57    1            47    -10
5    National Star        2    56.0    5    3.75     0.0   -     -7           -     +0
6    Mayenne              3    60.0    6    10.00    2.0   67    -4           57    -10
7    Arizona Lady         4    60.0    7    10.50    1.0   55    -2           45    -10
8    Chasing Heart        3    60.0    8    99.99    2.0   -     -4           -     +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arden Park - 53 - +53 2.0 -
2 Shikoku Line - 52 - +52 2.0
3 High Flyby 68 64 58 +6 2.0 -
4 Oceans Pride 57 57 47 +10 0.0 -
5 National Star - 75 - +75 0.0 -
6 Mayenne 67 61 57 +4 2.0 -
7 Arizona Lady 55 51 45 +6 1.0 -
8 Chasing Heart - 44 - +44 2.0 -
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