Official NHA Assessment

Race 7: SA OFF GRID POWER MR 90 HANDICAP (Open)

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Line Horse
Teatro
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 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    Transact             3    55.5    1    0.00     2.0   81    79           81    +0
2    Teatro               5    59.0    2    1.25     0.0   90    90           90    +0
3    Giacomo Puccini      4    57.0    3    2.50     2.5   84    81           81    -3
4    Forest Spy           2    55.5    4    4.75     1.0   83    81           81    -2
5    Kuznetsov            2    52.0    5    5.50     1.0   75    74           74    -1
6    Paris Rix            3    59.0    6    6.75     2.0   88    86           86    -2
7    Slings And Arrows    3    59.0    7    14.50    2.0   88    86           86    -2
8    Rimaah               2    57.5    8    14.75    1.0   87    85           85    -2
9    Gallic Tribe         4    61.0    9    17.50    2.5   92    89           89    -3
10   Father's Frost       7    59.0    10   17.55    0.0   88    90           90    +2
99   Tipsy Tina           2    54.5    99   0.00     1.0   -     79           79    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Transact 81 77 81 -4 2.0 -
2 Teatro Line 90 91 90 +1 0.0
3 Giacomo Puccini 84 72 81 -9 2.5 -
4 Forest Spy 83 85 81 +4 1.0 -
5 Kuznetsov 75 61 74 -13 1.0 -
6 Paris Rix 88 81 86 -5 2.0 -
7 Slings And Arrows 88 92 86 +6 2.0 -
8 Rimaah 87 70 85 -15 1.0 -
9 Gallic Tribe 92 101 89 +12 2.5 -
10 Father's Frost 88 62 90 -28 0.0 -
99 Tipsy Tina - 91 79 +12 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