Official NHA Assessment

Race 4: www.tabgold.co.za FM 83 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Retail Therapy
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 10
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    Aisling              3    60.0    1    0.00     6.0   83    76           83    +0
2    Princess Tea         3    57.0    2    0.30     6.0   77    70           70    -7
3    Russian Doll         2    56.5    3    0.50     4.0   87    73           77    -10
4    Retail Therapy       5    52.5    4    1.80     0.0   73    73           73    +0
5    Ethiopian Queen      3    59.0    5    1.90     6.0   81    74           74    -7
6    Beckoning Beauty     4    51.5    6    2.00     7.0   71    57           61    -10
7    Toto                 4    59.0    7    2.25     7.0   81    72           72    -9
8    Lady Heist           2    56.0    8    2.50     4.0   83    72           73    -10
9    Winter Journey       3    53.0    9    3.10     6.0   63    62           62    -1
10   Blush Of Dawn        8    52.0    10   4.90     0.0   66    72           72    +6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Aisling 83 66 83 -17 6.0 -
2 Princess Tea 77 77 70 +7 6.0 -
3 Russian Doll 87 93 77 +16 4.0 -
4 Retail Therapy Line 73 70 73 -3 0.0
5 Ethiopian Queen 81 81 74 +7 6.0 -
6 Beckoning Beauty 71 75 61 +14 7.0 -
7 Toto 81 79 72 +7 7.0 -
8 Lady Heist 83 97 73 +24 4.0 -
9 Winter Journey 63 50 62 -12 6.0 -
10 Blush Of Dawn 66 64 72 -8 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