Official NHA Assessment

Race 9: LIGHT AND WONDER CLASS 4 (Open. Benchmark at 60.0kg = 80)

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Line Horse
Tough Terrain
Reference for assessment
Exact Matches
0 / 18
Calculated = Official
Close Matches
4 / 18
Within 2 points
Significant Diffs
11 / 18
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    Arctic Wizard        3    60.0    1    0.00     6.0   88    68           68    -20
2    Cork Bay             3    57.5    2    1.00     6.0   83    63           73    -10
3    Tough Terrain        5    61.0    3    3.25     0.0   82    82           82    +0
4    Please Be True       2    59.0    4    3.75     4.0   86    70           76    -10
5    Firingonallengines   4    57.0    5    4.05     7.0   74    60           64    -10
6    Worldly              2    56.5    6    5.30     4.0   81    65           71    -10
6    Sun Dazed            6    57.5    6    5.30     0.0   75    75           75    +0
8    Golden Destiny       2    59.5    8    6.30     4.0   87    71           77    -10
9    Bank Street          3    55.0    9    7.30     6.0   78    58           68    -10
10   Trippi's Silk        4    56.0    10   7.70     7.0   72    58           62    -10
11   Paratrooper          4    58.5    11   8.95     7.0   77    63           67    -10
12   Indecent Proposal    4    55.5    12   9.05     7.0   71    57           61    -10
13   Counter Attack       3    59.5    13   9.10     6.0   79    67           69    -10
14   Billy Cool           2    60.0    14   9.20     4.0   88    72           78    -10
15   Twentytwentyvision   2    57.0    15   9.70     4.0   74    66           66    -8
16   Augusta Blue         5    55.0    16   11.20    0.0   70    70           70    +0
17   Diamond Rock         4    59.0    17   11.25    7.0   78    64           68    -10
99   Street Outlaw        5    55.0    99   0.00     0.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Arctic Wizard 88 110 68 +42 6.0 -
2 Cork Bay 83 80 73 +7 6.0 -
3 Tough Terrain Line 82 81 82 -1 0.0
4 Please Be True 86 93 76 +17 4.0 -
5 Firingonallengines 74 69 64 +5 7.0 -
6 Worldly 81 78 71 +7 4.0 -
6 Sun Dazed 75 64 75 -11 0.0 -
8 Golden Destiny 87 90 77 +13 4.0 -
9 Bank Street 78 67 68 -1 6.0 -
10 Trippi's Silk 72 73 62 +11 7.0 -
11 Paratrooper 77 73 67 +6 7.0 -
12 Indecent Proposal 71 65 61 +4 7.0 -
13 Counter Attack 79 67 69 -2 6.0 -
14 Billy Cool 88 73 78 -5 4.0 -
15 Twentytwentyvision 74 80 66 +14 4.0 -
16 Augusta Blue 70 69 70 -1 0.0 -
17 Diamond Rock 78 78 68 +10 7.0 -
99 Street Outlaw - 78 70 +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