Official NHA Assessment

Race 4: MIKE DE KOCK RACING STABLES MAIDEN PLATE (3-year-olds) (For Maiden 3-year-olds)

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Line Horse
Billy Of Tea
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
8 / 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    Ninety Nine Heros    2    60.0    1    0.00     0.0   85    80           80    -5
2    Sugar Blast          2    60.0    2    0.70     0.0   68    85           85    +17
3    Billy Of Tea         2    60.0    3    2.40     0.0   82    82           82    +0
4    Rhumba Stiltskin     3    60.0    4    12.10    9.5   -     61           61    +61
5    Thalaiva             2    60.0    5    17.20    0.0   65    80           80    +15
6    Zero Dawn            3    60.0    6    17.40    9.5   -     61           61    +61
7    Press Search         3    56.0    7    23.50    9.5   -     53           53    +53
8    The Golden Goal      4    58.5    8    27.40    6.0   66    65           65    -1
9    U King               3    60.0    9    99.99    9.5   -     61           61    +61
99   Baker Street         2    60.0    99   0.00     0.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ninety Nine Heros 85 83 80 +3 0.0 -
2 Sugar Blast 68 102 85 +17 0.0 -
3 Billy Of Tea Line 82 75 82 -7 0.0
4 Rhumba Stiltskin - 63 61 +2 9.5 -
5 Thalaiva 65 56 80 -24 0.0 -
6 Zero Dawn - 55 61 -6 9.5 -
7 Press Search - 45 53 -8 9.5 -
8 The Golden Goal 66 55 65 -10 6.0 -
9 U King - 50 61 -11 9.5 -
99 Baker Street - - 80 -80 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