Official NHA Assessment

Race 7: SCHWEPPES DIANA STAKES (Grade 3) (Fillies and Mares)

Back to Race
Line Horse
Swiatek
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
7 / 12
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    She's My World       2    51.5    1    0.00     0.0   96    103          102   +6
2    Stormwatch           2    51.5    2    0.50     0.0   94    108          108   +14
3    Swiatek              3    55.5    3    0.70     8.0   100   100          100   +0
4    Keukenhof            2    51.5    4    1.70     0.0   104   106          106   +2
5    Kinda Wonderful      2    58.5    5    2.20     0.0   107   120          120   +13
6    Festival Chic        2    55.5    6    2.60     0.0   93    113          113   +20
7    Scarlet Macaw        2    60.0    7    4.10     0.0   110   121          121   +11
8    Princess Of Gaul     2    53.5    8    5.35     0.0   107   107          107   +0
9    Be Merry             2    60.0    9    5.85     0.0   110   120          120   +10
10   Sohot Sowhat         3    55.5    10   6.15     8.0   101   95           95    -6
11   Trip To Maputo       2    55.5    11   6.45     0.0   99    111          111   +12
12   I'm So Pritti        2    55.5    12   8.45     0.0   100   111          111   +11
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 She's My World 96 106 102 +4 0.0 -
2 Stormwatch 94 109 108 +1 0.0 -
3 Swiatek Line 100 104 100 +4 8.0
4 Keukenhof 104 110 106 +4 0.0 -
5 Kinda Wonderful 107 108 120 -12 0.0 -
6 Festival Chic 93 96 113 -17 0.0 -
7 Scarlet Macaw 110 107 121 -14 0.0 -
8 Princess Of Gaul 107 114 107 +7 0.0 -
9 Be Merry 110 104 120 -16 0.0 -
10 Sohot Sowhat 101 92 95 -3 8.0 -
11 Trip To Maputo 99 96 111 -15 0.0 -
12 I'm So Pritti 100 100 111 -11 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