Official NHA Assessment

Race 1: 4RACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

Back to Race
Line Horse
Old Fashioned
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
9 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Queensland           2    56.5    1    0.00     5.0   74    65           65    -9
2    Rockabilly           3    57.5    2    2.00     7.5   -     62           62    +62
3    Old Fashioned        3    60.0    3    2.30     7.5   67    67           67    +0
4    Slender Silhouette   2    56.5    4    3.10     5.0   78    65           68    -10
5    My Dear Friend       2    56.5    5    4.60     5.0   72    65           65    -7
6    Second To Nunn       2    59.0    6    6.20     5.0   -     70           70    +70
7    Rock Music           2    59.0    7    6.30     5.0   -     70           70    +70
8    Forest Drum          3    58.5    8    11.10    7.5   48    64           64    +16
9    Sarsden Jet          3    56.5    9    14.60    7.5   -     60           60    +60
10   Gold Platina         2    59.0    10   19.60    5.0   61    70           70    +9
99   Princess Of All      3    54.0    99   0.00     7.5   -     55           55    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Queensland 74 80 65 +15 5.0 -
2 Rockabilly - 74 62 +12 7.5 -
3 Old Fashioned Line 67 76 67 +9 7.5
4 Slender Silhouette 78 77 68 +9 5.0 -
5 My Dear Friend 72 77 65 +12 5.0 -
6 Second To Nunn - 67 70 -3 5.0 -
7 Rock Music - 75 70 +5 5.0 -
8 Forest Drum 48 48 64 -16 7.5 -
9 Sarsden Jet - 46 60 -14 7.5 -
10 Gold Platina 61 58 70 -12 5.0 -
99 Princess Of All - 73 55 +18 7.5 -
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