Official NHA Assessment

Race 12: NEXT TURFFONTEIN RACEMEETING THURSDAY 18 JANUARY MR 72 HANDICAP (Open)

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Line Horse
Duke Of Rock
Reference for assessment
Exact Matches
2 / 13
Calculated = Official
Close Matches
5 / 13
Within 2 points
Significant Diffs
7 / 13
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    Max The Otter        2    59.0    1    0.00     3.5   70    73           70    +0
2    Simply Magic         3    57.0    2    0.20     5.0   66    66           66    +0
3    Fulliautomatix       3    57.0    3    0.60     5.0   66    66           66    +0
4    Halberdier           4    60.0    4    0.70     6.0   79    70           70    -9
5    Duke Of Rock         3    59.5    5    1.40     5.0   71    71           71    +0
6    Twice As Wild        6    48.0    6    2.75     0.0   56    58           58    +2
7    Jet Cat              9    55.0    7    3.75     0.0   62    72           72    +10
8    Run For Cover        5    61.0    8    4.50     0.0   74    84           84    +10
9    Sugary Sweet         2    57.5    9    6.75     3.5   74    70           70    -4
10   Kittyboys Girl       2    55.5    10   10.50    3.5   63    66           66    +3
11   Back To The Future   2    60.0    11   16.00    3.5   75    75           75    +0
99   Arilena              6    56.5    99   0.00     0.0   -     75           75    +0
99   Circus Lights        5    55.5    99   0.00     0.0   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Max The Otter 70 72 70 +2 3.5 -
2 Simply Magic 66 67 66 +1 5.0 -
3 Fulliautomatix 66 66 66 ✓ Match 5.0 -
4 Halberdier 79 83 70 +13 6.0 -
5 Duke Of Rock Line 71 76 71 +5 5.0
6 Twice As Wild 56 51 58 -7 0.0 -
7 Jet Cat 62 60 72 -12 0.0 -
8 Run For Cover 74 70 84 -14 0.0 -
9 Sugary Sweet 74 56 70 -14 3.5 -
10 Kittyboys Girl 63 59 66 -7 3.5 -
11 Back To The Future 75 74 75 -1 3.5 -
99 Arilena - 75 75 ✓ Match 0.0 -
99 Circus Lights - 64 73 -9 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