Official NHA Assessment

Race 7: WWW.TAB4RACING.COM FM 80 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Mckenna Skye
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
1 / 11
Within 2 points
Significant Diffs
10 / 11
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    Gilded Butterfly     3    57.0    1    0.00     2.0   78    74           78    +0
2    Mckenna Skye         3    60.5    2    0.75     2.0   85    85           85    +0
3    Mamaquera            5    56.5    3    0.85     0.0   73    81           81    +8
4    Splash Of Green      3    58.0    4    2.25     2.0   80    79           79    -1
5    Good Queen Bess (GB  4    60.5    5    3.00     0.5   81    86           86    +5
6    Let There Be Light   4    54.0    6    3.20     0.5   76    73           73    -3
7    Golden Spoon         4    60.0    7    3.40     0.5   80    84           84    +4
8    Arden Park           3    55.5    8    4.40     2.0   75    71           71    -4
9    Quiet Rebellion      3    56.5    9    6.00     2.0   77    73           73    -4
10   Dancing Arabian      4    56.0    10   8.00     0.5   75    75           75    +0
11   Nasiriyah            3    55.0    11   16.00    2.0   74    70           70    -4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gilded Butterfly 78 108 78 +30 2.0 -
2 Mckenna Skye Line 85 69 85 -16 2.0
3 Mamaquera 73 60 81 -21 0.0 -
4 Splash Of Green 80 56 79 -23 2.0 -
5 Good Queen Bess (GB) 81 97 86 +11 0.5 -
6 Let There Be Light 76 59 73 -14 0.5 -
7 Golden Spoon 80 76 84 -8 0.5 -
8 Arden Park 75 53 71 -18 2.0 -
9 Quiet Rebellion 77 74 73 +1 2.0 -
10 Dancing Arabian 75 60 75 -15 0.5 -
11 Nasiriyah 74 46 70 -24 2.0 -
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