Official NHA Assessment

Race 5: #THISISRACING GRADUATION PLATE (Maidens,1 & 2 time winners)

Back to Race
Line Horse
Razor Red
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Captain Tatters      5    60.0    1    0.00     0.0   109   94           70    -39
2    Vista Nova           4    60.0    2    7.50     5.0   80    84           84    +4
3    No Laying Up         4    60.0    3    8.50     5.0   91    84           84    -7
4    Razor Red            3    57.0    4    8.75     4.5   79    79           79    +0
5    Life On Mars         4    57.0    5    9.25     5.0   77    78           78    +1
6    Jaquar Cat           3    57.0    6    13.75    4.5   68    79           79    +11
7    Toureiro             5    57.0    7    18.00    0.0   59    88           88    +29
8    Guaquistador         4    55.0    8    20.50    5.0   58    74           74    +16
9    Africa's Rock        4    60.0    9    21.50    5.0   80    84           84    +4
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Captain Tatters 109 91 70 +21 0.0 -
2 Vista Nova 80 81 84 -3 5.0 -
3 No Laying Up 91 86 84 +2 5.0 -
4 Razor Red Line 79 63 79 -16 4.5
5 Life On Mars 77 87 78 +9 5.0 -
6 Jaquar Cat 68 46 79 -33 4.5 -
7 Toureiro 59 66 88 -22 0.0 -
8 Guaquistador 58 47 74 -27 5.0 -
9 Africa's Rock 80 70 84 -14 5.0 -
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