Official NHA Assessment

Race 4: TAB 4RACING APP NOVICE PLATE (F & M) (Maidens & 1 time winners (F & M))

Back to Race
Line Horse
Mary Lamb
Reference for assessment
Exact Matches
0 / 6
Calculated = Official
Close Matches
0 / 6
Within 2 points
Significant Diffs
5 / 6
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Gideon's Daughter    4    59.0    1    0.00     2.5   74    74           70    -4
2    Amazing Colours      4    59.0    2    2.25     2.5   78    77           77    -1
3    Mary Lamb            3    60.0    3    2.35     5.0   73    73           73    +0
4    Burn Baby Burn       2    59.0    4    7.10     0.0   72    79           79    +7
5    Turnthebeataround    3    60.0    5    7.60     5.0   67    71           71    +4
6    Zariyah              2    58.5    6    24.85    0.0   77    78           78    +1
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gideon's Daughter 74 94 70 +24 2.5 -
2 Amazing Colours 78 59 77 -18 2.5 -
3 Mary Lamb Line 73 76 73 +3 5.0
4 Burn Baby Burn 72 65 79 -14 0.0 -
5 Turnthebeataround 67 64 71 -7 5.0 -
6 Zariyah 77 61 78 -17 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