Official NHA Assessment

Race 2: RCS MIXED SALE 7 MAY 2026 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Swift Serenity
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 8
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    Take That            3    60.0    1    0.00     2.5   -     72           6     +6
2    Swift Serenity       2    60.0    2    1.75     1.5   74    74           74    +0
3    She's Chosen         2    57.0    3    2.50     1.5   -     68           68    +68
4    Love Her Madly       2    60.0    4    2.70     1.5   70    74           74    +4
5    Miss Smiley          3    60.0    5    3.70     2.5   65    72           72    +7
6    Pipsqueak            3    60.0    6    10.20    2.5   -     72           72    +72
7    Glitter And Glam     3    60.0    7    16.70    2.5   -     72           72    +72
99   Ruby Rex             3    60.0    99   0.00     2.5   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Take That - 77 6 +71 2.5 -
2 Swift Serenity Line 74 73 74 -1 1.5
3 She's Chosen - - 68 - 1.5 -
4 Love Her Madly 70 70 74 -4 1.5 -
5 Miss Smiley 65 66 72 -6 2.5 -
6 Pipsqueak - - 72 -72 2.5 -
7 Glitter And Glam - - 72 -72 2.5 -
99 Ruby Rex - 72 72 ✓ Match 2.5 -
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