Official NHA Assessment

Race 8: WISHING YOU A MERRY CHRISTMAS MIDDLE STAKES (For horses with nett rating of 101 and below)

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Line Horse
Retallick
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
6 / 10
Within 2 points
Significant Diffs
3 / 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    Flowerbomb           2    54.5    1    0.00     4.0   93    89           89    -4
2    Sheldon              6    60.0    2    1.00     0.0   95    108          108   +13
3    Mercantour           5    56.0    3    2.25     0.0   104   100          100   -4
4    Retallick            3    60.0    4    2.50     6.0   96    96           96    +0
5    Marengo              4    58.0    5    3.75     7.0   90    90           90    +0
6    Smith And Wesson     2    47.5    6    4.50     4.0   78    75           75    -3
7    Herecomestherain     4    58.0    7    5.25     7.0   87    90           90    +3
8    Set To Go            2    56.0    8    5.30     4.0   91    92           92    +1
9    Remember When        3    58.5    9    5.50     6.0   93    93           93    +0
10   Boisterous           2    54.0    10   15.00    4.0   88    88           88    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Flowerbomb 93 87 89 -2 4.0 -
2 Sheldon 95 106 108 -2 0.0 -
3 Mercantour 104 113 100 +13 0.0 -
4 Retallick Line 96 96 96 ✓ Match 6.0
5 Marengo 90 88 90 -2 7.0 -
6 Smith And Wesson 78 73 75 -2 4.0 -
7 Herecomestherain 87 55 90 -35 7.0 -
8 Set To Go 91 84 92 -8 4.0 -
9 Remember When 93 90 93 -3 6.0 -
10 Boisterous 88 87 88 -1 4.0 -
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