Official NHA Assessment

Race 6: BETWAY PINNACLE STAKES (F & M) (For Fillies and Mares)

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Line Horse
Back For More
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
7 / 10
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    Luna Halo            4    62.0    1    0.00     4.5   106   96           96    -10
2    Red Sash             5    59.5    2    2.25     0.0   91    103          103   +12
3    Golden Pacific       2    59.5    3    3.75     0.0   96    101          101   +5
4    Back For More        4    58.0    4    6.00     4.5   88    88           88    +0
5    Gimme's Lassie       5    61.0    5    8.50     0.0   99    103          103   +4
6    Rose Of Bayeux       3    56.5    6    9.00     7.0   85    80           80    -5
7    Concerto             4    55.0    7    9.10     4.5   77    82           82    +5
8    Lady Silvano         5    56.5    8    12.35    0.0   84    94           94    +10
9    Lady Mistico         2    55.0    9    13.85    0.0   79    91           91    +12
99   Chere For Me         5    56.5    99   0.00     0.0   -     94           94    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Luna Halo 106 106 96 +10 4.5 -
2 Red Sash 91 101 103 -2 0.0 -
3 Golden Pacific 96 93 101 -8 0.0 -
4 Back For More Line 88 75 88 -13 4.5
5 Gimme's Lassie 99 101 103 -2 0.0 -
6 Rose Of Bayeux 85 77 80 -3 7.0 -
7 Concerto 77 73 82 -9 4.5 -
8 Lady Silvano 84 104 94 +10 0.0 -
9 Lady Mistico 79 75 91 -16 0.0 -
99 Chere For Me - 70 94 -24 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