Official NHA Assessment

Race 6: CAPE TURF CLUB CLASS 5 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 66)

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Line Horse
Jet Green
Reference for assessment
Exact Matches
3 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
6 / 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    Tres Chic            4    57.5    1    0.00     4.5   62    60           60    -2
2    Family Power         4    60.0    2    0.75     4.5   67    69           69    +2
3    My Only Weakness     3    60.0    3    1.15     7.0   80    64           70    -10
4    Jet Green            4    55.5    4    3.15     4.5   58    58           58    +0
5    Hang Out The Stars   5    56.0    5    3.20     0.0   58    68           68    +10
6    Im The Buzz          5    61.0    6    3.60     0.0   68    77           77    +9
7    Black Path           6    52.0    7    4.85     0.0   50    58           58    +8
8    Wedding Bells        2    54.5    8    5.25     0.0   56    63           63    +7
9    Miss New York        3    60.5    9    6.50     7.0   67    61           61    -6
10   Fly To Rio           4    56.0    10   7.25     4.5   58    57           57    -1
99   White Waters         2    59.5    99   0.00     0.0   -     73           73    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Tres Chic 62 52 60 -8 4.5 -
2 Family Power 67 87 69 +18 4.5 -
3 My Only Weakness 80 84 70 +14 7.0 -
4 Jet Green Line 58 54 58 -4 4.5
5 Hang Out The Stars 58 58 68 -10 0.0 -
6 Im The Buzz 68 68 77 -9 0.0 -
7 Black Path 50 58 58 ✓ Match 0.0 -
8 Wedding Bells 56 52 63 -11 0.0 -
9 Miss New York 67 61 61 ✓ Match 7.0 -
10 Fly To Rio 58 54 57 -3 4.5 -
99 White Waters - 73 73 ✓ Match 0.0 -
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