Official NHA Assessment

Race 5: Lucky Fish Diamond Riches CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 80)

Back to Race
Line Horse
Happy Fortune
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 8
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Ubukhwebezana        4    62.0    1    0.00     5.0   84    87           87    +3
2    Happy Fortune        3    55.5    2    0.80     8.0   72    72           72    +0
3    Alannah              2    60.0    3    1.20     0.0   96    97           97    +1
4    Siberian Winter      3    54.5    4    1.50     8.0   73    69           69    -4
5    Princess Goldie      3    56.0    5    1.90     8.0   73    72           72    -1
6    Prom Queen           3    59.5    6    3.50     8.0   80    77           77    -3
7    Golden Moment        3    60.0    7    4.00     8.0   81    78           78    -3
8    Sneeuwitjie          2    52.0    8    6.90     0.0   79    77           77    -2
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ubukhwebezana 84 93 87 +6 5.0 -
2 Happy Fortune Line 72 80 72 +8 8.0
3 Alannah 96 102 97 +5 0.0 -
4 Siberian Winter 73 79 69 +10 8.0 -
5 Princess Goldie 73 73 72 +1 8.0 -
6 Prom Queen 80 81 77 +4 8.0 -
7 Golden Moment 81 62 78 -16 8.0 -
8 Sneeuwitjie 79 75 77 -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