Official NHA Assessment

Race 4: BETWAY BACK THE BOKS FM 75 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Pretty In Pearls
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
9 / 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    Ideal Future         6    49.5    1    0.00     0.0   55    68           55    +0
2    Winning Queen        6    52.0    2    1.50     0.0   57    78           78    +21
3    Pretty In Pearls     3    55.5    3    2.00     9.5   66    66           66    +0
4    Burmese Tiara        4    51.5    4    2.75     6.0   63    63           63    +0
5    Summerland           5    52.5    5    3.00     0.0   55    77           77    +22
6    Liverpool Legend     4    53.0    6    4.00     6.0   61    65           65    +4
7    Kind Judy            4    60.0    7    5.25     6.0   75    77           77    +2
8    Beguiling            3    53.0    8    6.50     9.5   63    56           56    -7
9    Marshmallow          4    52.0    9    11.50    6.0   70    61           61    -9
10   Last Cheer           5    59.0    10   11.55    0.0   73    87           87    +14
99   Spirit Princess      2    52.5    99   0.00     0.0   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ideal Future 55 72 55 +17 0.0 -
2 Winning Queen 57 58 78 -20 0.0 -
3 Pretty In Pearls Line 66 56 66 -10 9.5
4 Burmese Tiara 63 68 63 +5 6.0 -
5 Summerland 55 45 77 -32 0.0 -
6 Liverpool Legend 61 59 65 -6 6.0 -
7 Kind Judy 75 73 77 -4 6.0 -
8 Beguiling 63 50 56 -6 9.5 -
9 Marshmallow 70 72 61 +11 6.0 -
10 Last Cheer 73 72 87 -15 0.0 -
99 Spirit Princess - 51 74 -23 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