Official NHA Assessment

Race 3: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 GRADUATION PLATE (For 1 & 2 Time Winners & Maidens)

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Line Horse
Viva Spirit
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
7 / 7
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Greeting My Master   2    57.0    1    0.00     0.0   95    87           87    -8
2    William Iron Arm     2    60.0    2    1.25     0.0   114   97           104   -10
3    Viva Spirit          2    59.0    3    6.00     0.0   91    91           91    +0
4    Vitellius            5    56.5    4    6.75     0.0   74    86           86    +12
5    Feel All Right       2    55.5    5    9.50     0.0   70    84           84    +14
6    We Are The Logans    2    55.0    6    11.50    0.0   92    83           83    -9
99   Blackberry Breeze    4    55.5    99   0.00     0.5   -     83           83    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Greeting My Master 95 110 87 +23 0.0 -
2 William Iron Arm 114 111 104 +7 0.0 -
3 Viva Spirit Line 91 72 91 -19 0.0
4 Vitellius 74 73 86 -13 0.0 -
5 Feel All Right 70 70 84 -14 0.0 -
6 We Are The Logans 92 73 83 -10 0.0 -
99 Blackberry Breeze - 71 83 -12 0.5 -
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