Official NHA Assessment

Race 2: RACING TODAY MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Red Lhasa
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
6 / 9
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    Potenza              3    59.0    1    0.00     6.0   -     60           6     +6
2    Salagadoola          2    59.0    2    1.50     0.0   64    75           75    +11
3    Lana View            3    60.0    3    3.25     6.0   68    64           64    -4
4    Red Lhasa            2    59.0    4    7.00     0.0   72    72           72    +0
5    Night In Japan       3    56.0    5    8.50     6.0   53    54           54    +1
6    Miss Mackie          3    60.0    6    9.25     6.0   47    62           62    +15
7    Tori's Girl          3    60.0    7    10.50    6.0   55    62           62    +7
8    Lyrics And Songs     3    59.0    8    11.50    6.0   -     60           60    +60
9    Kitten Tattoo        3    59.0    9    28.25    6.0   -     60           60    +60
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Potenza - 76 6 +70 6.0 -
2 Salagadoola 64 66 75 -9 0.0 -
3 Lana View 68 64 64 ✓ Match 6.0 -
4 Red Lhasa Line 72 63 72 -9 0.0
5 Night In Japan 53 49 54 -5 6.0 -
6 Miss Mackie 47 49 62 -13 6.0 -
7 Tori's Girl 55 59 62 -3 6.0 -
8 Lyrics And Songs - 54 60 -6 6.0 -
9 Kitten Tattoo - - 60 -60 6.0 -
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