Official NHA Assessment

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

Back to Race
Line Horse
Monkey Puzzle
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
2 / 13
Within 2 points
Significant Diffs
8 / 13
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Monkey Puzzle        4    60.0    1    0.00     4.5   75    75           75    +0
2    Reece's Wish         3    55.0    2    1.30     7.0   -     63           63    +63
3    Tommy Atkins         3    58.0    3    4.90     7.0   -     66           66    +66
4    Epidaurus            3    58.0    4    7.20     7.0   -     66           66    +66
5    Royale Jacket        2    58.0    5    7.90     0.0   79    80           80    +1
6    Stokesy              3    58.0    6    8.40     7.0   -     66           66    +66
7    Forever Canford      2    58.0    7    8.65     0.0   67    80           80    +13
8    Space Mission        2    58.0    8    9.75     0.0   -     80           80    +80
9    Mirror Flection      3    60.0    9    10.50    7.0   -     70           70    +70
10   Culturati            3    58.0    10   12.00    7.0   -     66           66    +66
11   Storm Burst          2    58.0    11   16.75    0.0   75    80           80    +5
99   Cover (ARG)          3    58.0    99   0.00     7.0   -     66           66    +0
99   Carnarvon            2    58.0    99   0.00     0.0   -     80           80    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Monkey Puzzle Line 75 79 75 +4 4.5
2 Reece's Wish - 82 63 +19 7.0 -
3 Tommy Atkins - 83 66 +17 7.0 -
4 Epidaurus - 63 66 -3 7.0 -
5 Royale Jacket 79 74 80 -6 0.0 -
6 Stokesy - 81 66 +15 7.0 -
7 Forever Canford 67 67 80 -13 0.0 -
8 Space Mission - 75 80 -5 0.0 -
9 Mirror Flection - 68 70 -2 7.0 -
10 Culturati - 85 66 +19 7.0 -
11 Storm Burst 75 63 80 -17 0.0 -
99 Cover (ARG) - - 66 -66 7.0 -
99 Carnarvon - 78 80 -2 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