Official NHA Assessment

Race 6: CATCH DJ ANKLETAP, ROB FORBES ON SUMMER CUP DAY FM 84 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Royal Invitation
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
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    Nkwenkwezi           3    54.5    1    0.00     8.0   73    60           73    +0
2    Kissing Machine      3    59.0    2    1.20     8.0   82    75           75    -7
3    Artic Silver         3    57.5    3    1.50     8.0   80    71           71    -9
4    Royal Invitation     5    59.0    4    1.60     0.0   90    90           90    +0
5    Hazy Dazy            2    55.5    5    1.90     0.0   94    83           84    -10
6    Pretty Analia        5    54.5    6    3.90     0.0   73    78           78    +5
7    Azaleas For All      4    58.5    7    4.30     4.5   81    76           76    -5
8    Rosy Lemon           5    52.5    8    4.80     0.0   69    72           72    +3
9    Cartagena            4    52.0    9    6.00     4.5   68    62           62    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Nkwenkwezi 73 78 73 +5 8.0 -
2 Kissing Machine 82 88 75 +13 8.0 -
3 Artic Silver 80 77 71 +6 8.0 -
4 Royal Invitation Line 90 99 90 +9 0.0
5 Hazy Dazy 94 117 84 +33 0.0 -
6 Pretty Analia 73 61 78 -17 0.0 -
7 Azaleas For All 81 82 76 +6 4.5 -
8 Rosy Lemon 69 72 72 ✓ Match 0.0 -
9 Cartagena 68 77 62 +15 4.5 -
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