Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MAIDEN PLATE (For all Maidens)

Back to Race
Line Horse
Porfirio
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 10
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Porfirio             6    60.0    1    0.00     0.0   67    67           67    +0
2    Never To Clever      4    60.0    2    1.75     0.5   56    69           69    +13
3    Big Five             3    60.0    3    3.25     1.5   63    66           66    +3
4    Blackburn Jet        3    60.0    4    3.30     1.5   52    65           65    +13
5    Musical Kiss         3    53.0    5    6.50     1.5   51    50           50    -1
6    Robin Redbreast      3    60.0    6    12.50    1.5   50    64           64    +14
7    Ballista             3    60.0    7    13.75    1.5   -     64           64    +64
8    Red Hot              3    57.0    8    25.75    1.5   58    58           58    +0
99   Equestrian Affair    2    56.0    99   0.00     0.0   -     59           59    +0
99   Vesuvio              5    56.0    99   0.00     0.0   -     59           59    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Porfirio Line 67 88 67 +21 0.0
2 Never To Clever 56 64 69 -5 0.5 -
3 Big Five 63 53 66 -13 1.5 -
4 Blackburn Jet 52 50 65 -15 1.5 -
5 Musical Kiss 51 53 50 +3 1.5 -
6 Robin Redbreast 50 37 64 -27 1.5 -
7 Ballista - 46 64 -18 1.5 -
8 Red Hot 58 56 58 -2 1.5 -
99 Equestrian Affair - 78 59 +19 0.0 -
99 Vesuvio - 85 59 +26 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