Official NHA Assessment

Race 8: TAB 4RACING APP FM 86 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Ringa Ringa Roses
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
5 / 8
Within 2 points
Significant Diffs
0 / 8
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    American Beauty      2    50.5    1    0.00     0.0   77    69           77    +0
2    Lady Elliot          2    52.5    2    1.20     0.0   71    77           77    +6
3    Ringa Ringa Roses    2    58.0    3    1.80     0.0   87    87           87    +0
4    Fair Proposal        2    56.0    4    3.30     0.0   83    81           81    -2
5    Delaware River       2    53.0    5    3.35     0.0   77    75           75    -2
6    Streisand            3    60.0    6    3.45     2.5   86    84           84    -2
7    Lady Sabrina         3    58.0    7    4.85     2.5   82    79           79    -3
99   On A Jet Plane       3    52.5    99   0.00     2.5   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 American Beauty 77 81 77 +4 0.0 -
2 Lady Elliot 71 72 77 -5 0.0 -
3 Ringa Ringa Roses Line 87 87 87 ✓ Match 0.0
4 Fair Proposal 83 83 81 +2 0.0 -
5 Delaware River 77 77 75 +2 0.0 -
6 Streisand 86 86 84 +2 2.5 -
7 Lady Sabrina 82 81 79 +2 2.5 -
99 On A Jet Plane - 71 68 +3 2.5 -
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