Official NHA Assessment

Race 7: CAPE TURF CLUB CAPE C STAKES (For All Horses with a nett rating of 78 & below)

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Line Horse
Wylie Jack
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
7 / 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    Shifting Path        2    61.5    1    0.00     6.5   77    64           64    -13
2    Bluff On Bluff       3    58.5    2    0.05     9.5   71    52           61    -10
3    Wylie Jack           6    54.5    3    0.55     0.0   63    63           63    +0
4    Barney Mcgrew        4    60.0    4    1.05     11.0  75    52           65    -10
5    Swift Action         3    61.5    5    2.30     9.5   77    58           67    -10
6    Gravity              4    54.5    6    2.80     11.0  62    41           52    -10
7    Casino Ace           5    54.0    7    3.00     0.0   62    62           62    +0
8    William West         2    57.0    8    3.50     6.5   67    55           57    -10
9    Xplicit Content      4    51.0    9    3.70     11.0  56    34           46    -10
10   Tambourine Man       5    55.5    10   4.45     0.0   65    65           65    +0
99   Silver Screen        2    56.0    99   0.00     6.5   -     53           53    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shifting Path 77 62 64 -2 6.5 -
2 Bluff On Bluff 71 80 61 +19 9.5 -
3 Wylie Jack Line 63 61 63 -2 0.0
4 Barney Mcgrew 75 69 65 +4 11.0 -
5 Swift Action 77 77 67 +10 9.5 -
6 Gravity 62 63 52 +11 11.0 -
7 Casino Ace 62 56 62 -6 0.0 -
8 William West 67 51 57 -6 6.5 -
9 Xplicit Content 56 58 46 +12 11.0 -
10 Tambourine Man 65 64 65 -1 0.0 -
99 Silver Screen - 70 53 +17 6.5 -
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