Official NHA Assessment

Race 9: NEXT VAAL RACEMEETING TUESDAY 10 JANUARY FM 75 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Princess Ozma
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
7 / 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    United Council       5    55.5    1    0.00     0.0   76    76           76    +0
2    Paschals Samore      5    57.5    2    4.25     0.0   70    81           81    +11
3    Gimmealight          3    58.5    3    7.25     5.0   82    72           72    -10
4    Princess Ozma        2    60.0    4    7.50     0.0   85    85           85    +0
5    Fasinada             4    52.0    5    13.50    2.5   56    64           64    +8
6    Angelsea             3    52.0    6    13.60    5.0   59    59           59    +0
7    Wikkel Spikkel       3    57.5    7    15.25    5.0   70    70           70    +0
8    Quantum              5    56.5    8    18.25    0.0   78    78           78    +0
9    Time Is Ticking      3    56.0    9    19.50    5.0   67    67           67    +0
99   Risky Business       3    53.5    99   0.00     5.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 United Council 76 100 76 +24 0.0 -
2 Paschals Samore 70 62 81 -19 0.0 -
3 Gimmealight 82 77 72 +5 5.0 -
4 Princess Ozma Line 85 66 85 -19 0.0
5 Fasinada 56 52 64 -12 2.5 -
6 Angelsea 59 64 59 +5 5.0 -
7 Wikkel Spikkel 70 65 70 -5 5.0 -
8 Quantum 78 67 78 -11 0.0 -
9 Time Is Ticking 67 60 67 -7 5.0 -
99 Risky Business - 75 62 +13 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