Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MIDDLE STAKES (For horses with nett rating of 92 and below)

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Line Horse
Jacob's Ladder
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
6 / 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    Quasimodo            2    54.0    1    0.00     0.0   80    72           72    -8
2    Jacob's Ladder       4    60.0    2    1.25     1.0   88    88           88    +0
3    American Landing     7    56.0    3    1.35     0.0   80    81           81    +1
4    Central City         5    54.5    4    1.60     0.0   82    78           78    -4
5    Atkinson Grimshaw    4    54.0    5    2.35     1.0   77    74           74    -3
6    Zig Zag              5    60.0    6    3.85     0.0   88    86           86    -2
7    Magnum Fire          7    56.0    7    4.35     0.0   81    77           77    -4
8    Jaspero              4    52.0    8    5.60     1.0   71    66           66    -5
9    Euphoric             6    52.0    9    6.85     0.0   69    68           68    -1
10   King Of Luv          4    50.5    10   15.10    1.0   48    63           63    +15
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Quasimodo 80 89 72 +17 0.0 -
2 Jacob's Ladder Line 88 73 88 -15 1.0
3 American Landing 80 80 81 -1 0.0 -
4 Central City 82 81 78 +3 0.0 -
5 Atkinson Grimshaw 77 75 74 +1 1.0 -
6 Zig Zag 88 87 86 +1 0.0 -
7 Magnum Fire 81 59 77 -18 0.0 -
8 Jaspero 71 76 66 +10 1.0 -
9 Euphoric 69 62 68 -6 0.0 -
10 King Of Luv 48 48 63 -15 1.0 -
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