Official NHA Assessment

Race 2: CLASSIC DAY 7 MARCH MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

Back to Race
Line Horse
Master's Lady
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
4 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    El Zani              3    60.0    1    0.00     4.5   -     79           6     +6
2    Star Blaze           3    60.0    2    2.40     4.5   -     79           79    +79
3    Slender Silhouette   2    60.0    3    3.00     3.0   77    82           82    +5
4    Master's Lady        2    56.0    4    4.20     3.0   74    74           74    +0
5    Elegant Edge         3    60.0    5    5.00     4.5   70    79           79    +9
6    Nicolson Landing     3    60.0    6    7.25     4.5   -     79           79    +79
7    Mystical Butterfly   3    60.0    7    9.50     4.5   75    79           79    +4
99   Foxy After Dark      3    60.0    99   0.00     4.5   -     79           79    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 El Zani - 82 6 +76 4.5 -
2 Star Blaze - 77 79 -2 4.5 -
3 Slender Silhouette 77 77 82 -5 3.0 -
4 Master's Lady Line 74 70 74 -4 3.0
5 Elegant Edge 70 70 79 -9 4.5 -
6 Nicolson Landing - 74 79 -5 4.5 -
7 Mystical Butterfly 75 72 79 -7 4.5 -
99 Foxy After Dark - - 79 -79 4.5 -
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