Official NHA Assessment

Race 10: NEXT TURFFONTEIN RACEMEETING THURSDAY 2 MARCH FM 78 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Defender Of Rights
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
7 / 11
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    National Star        2    54.0    1    0.00     0.0   78    70           78    +0
2    Defender Of Rights   3    55.5    2    2.50     3.0   69    69           69    +0
3    Run For Isla         3    51.5    3    3.50     3.0   64    60           60    -4
4    Save The Queen       3    56.0    4    4.00     3.0   77    69           69    -8
5    Say Yes              2    57.0    5    4.25     0.0   79    77           77    -2
6    Treaty               2    52.0    6    4.50     0.0   63    66           66    +3
7    Princess Ozma        2    59.0    7    5.00     0.0   83    80           80    -3
8    Skyfull              2    53.0    8    7.75     0.0   71    68           68    -3
9    Princess Ilaria      5    55.5    9    12.00    0.0   76    73           73    -3
99   Que Ceu Azul         2    60.0    99   0.00     0.0   -     82           82    +0
99   Prairie Falcon       3    60.0    99   0.00     3.0   -     76           76    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 National Star 78 75 78 -3 0.0 -
2 Defender Of Rights Line 69 67 69 -2 3.0
3 Run For Isla 64 58 60 -2 3.0 -
4 Save The Queen 77 75 69 +6 3.0 -
5 Say Yes 79 90 77 +13 0.0 -
6 Treaty 63 48 66 -18 0.0 -
7 Princess Ozma 83 66 80 -14 0.0 -
8 Skyfull 71 54 68 -14 0.0 -
9 Princess Ilaria 76 79 73 +6 0.0 -
99 Que Ceu Azul - 72 82 -10 0.0 -
99 Prairie Falcon - 78 76 +2 3.0 -
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