Official NHA Assessment

Race 4: GALLOP FORM MAIDEN PLATE (F & M) (For Maiden Fillies & Mares)

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Line Horse
Red Lhasa
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Sally Port           2    57.0    1    0.00     0.0   73    73           73    +0
2    Red Lhasa            2    57.0    2    1.20     0.0   77    77           77    +0
3    Sheezarocket         2    58.5    3    1.60     0.0   66    79           79    +13
4    Anemie               2    57.0    4    3.80     0.0   64    74           74    +10
5    Dee Day              4    56.0    5    7.10     6.0   61    59           59    -2
6    Skipper O'Malley     3    60.0    6    7.40     8.5   62    62           62    +0
7    Jumpthegreenlight    3    60.0    7    7.45     8.5   66    62           62    -4
8    World Of Flowers     2    54.5    8    10.85    0.0   -     68           68    +68
9    Swifty Linn          3    60.0    9    10.95    8.5   -     62           62    +62
10   Winter Glade         3    60.0    10   28.65    8.5   49    62           62    +13
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sally Port 73 79 73 +6 0.0 -
2 Red Lhasa Line 77 63 77 -14 0.0
3 Sheezarocket 66 62 79 -17 0.0 -
4 Anemie 64 61 74 -13 0.0 -
5 Dee Day 61 53 59 -6 6.0 -
6 Skipper O'Malley 62 62 62 ✓ Match 8.5 -
7 Jumpthegreenlight 66 59 62 -3 8.5 -
8 World Of Flowers - 54 68 -14 0.0 -
9 Swifty Linn - 44 62 -18 8.5 -
10 Winter Glade 49 49 62 -13 8.5 -
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