Official NHA Assessment

Race 4: TAB STARLING STAKES (Grade 3) (For 3 year-old Fillies)

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Line Horse
Pretty Persuasive
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
8 / 12
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    Valentina Balducci   2    59.0    1    0.00     0.0   86    91           91    +5
2    Ovation Star         3    59.0    2    0.70     6.0   90    84           84    -6
3    Pretty Persuasive    2    59.0    3    2.60     0.0   93    93           93    +0
4    Daisy Jones          2    59.0    4    3.00     0.0   86    93           93    +7
5    Mamlambo             2    59.0    5    3.60     0.0   92    92           92    +0
6    Elegantrix           2    60.0    6    3.70     0.0   106   94           96    -10
7    Warm Reception       3    59.0    7    5.00     6.0   89    79           79    -10
8    Surprise Party       2    59.0    8    5.10     0.0   81    91           91    +10
9    Back From War        2    59.0    9    9.70     0.0   97    91           91    -6
10   Stormy Day (ARG)     2    59.0    10   10.70    0.0   92    91           91    -1
99   Sister Golden Hair   2    59.0    99   0.00     0.0   -     91           91    +0
99   Tina Lovelace        2    59.0    99   0.00     0.0   -     91           91    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Valentina Balducci 86 97 91 +6 0.0 -
2 Ovation Star 90 94 84 +10 6.0 -
3 Pretty Persuasive Line 93 102 93 +9 0.0
4 Daisy Jones 86 108 93 +15 0.0 -
5 Mamlambo 92 91 92 -1 0.0 -
6 Elegantrix 106 106 96 +10 0.0 -
7 Warm Reception 89 100 79 +21 6.0 -
8 Surprise Party 81 83 91 -8 0.0 -
9 Back From War 97 86 91 -5 0.0 -
10 Stormy Day (ARG) 92 92 91 +1 0.0 -
99 Sister Golden Hair - 81 91 -10 0.0 -
99 Tina Lovelace - 95 91 +4 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