Official NHA Assessment

Race 4: TAB TELEBET 0861 000 822 MAIDEN PLATE (For all Maidens)

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Line Horse
Joe Harman
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
0 / 7
Within 2 points
Significant Diffs
6 / 7
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    Cape Point           4    60.0    1    0.00     1.5   56    55           55    -1
2    Joe Harman           4    60.0    2    1.75     1.5   59    59           59    +0
3    Jack In The Box      5    60.0    3    3.00     0.0   58    61           61    +3
4    Zero Rate            5    60.0    4    21.25    0.0   48    58           58    +10
5    Empress Ki           4    56.5    5    33.00    1.5   41    48           48    +7
99   Bravestarr           5    60.0    99   0.00     0.0   -     58           58    +0
99   Freezing Fast        5    60.0    99   0.00     0.0   -     58           58    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cape Point 56 61 55 +6 1.5 -
2 Joe Harman Line 59 54 59 -5 1.5
3 Jack In The Box 58 53 61 -8 0.0 -
4 Zero Rate 48 42 58 -16 0.0 -
5 Empress Ki 41 27 48 -21 1.5 -
99 Bravestarr - 40 58 -18 0.0 -
99 Freezing Fast - 44 58 -14 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