Official NHA Assessment

Race 5: RACEHORSE OWNERS ASSOCIATION CLASSIFIED STAKES (For horses with nett rating of 74 and below)

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Line Horse
Silver Tycoon
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
4 / 10
Within 2 points
Significant Diffs
5 / 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    Coral Creek          3    58.0    1    0.00     3.0   75    60           60    -15
2    Kyomai               4    60.0    2    1.25     1.5   73    71           71    -2
3    A Bit Chilly         3    56.0    3    1.75     3.0   72    59           62    -10
4    Silver Tycoon        7    60.0    4    1.85     0.0   73    73           73    +0
5    Morning Chess        4    56.0    5    2.85     1.5   65    61           61    -4
6    Oliver Twist         3    60.0    6    3.10     3.0   79    66           69    -10
7    Three Cheers         3    48.5    7    5.85     3.0   67    41           57    -10
8    Flash Lightning      4    58.0    8    6.10     1.5   68    63           63    -5
9    Bosnay               4    57.0    9    6.35     1.5   73    61           63    -10
10   Sundrop              6    50.0    10   34.60    0.0   50    50           50    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Coral Creek 75 73 60 +13 3.0 -
2 Kyomai 73 70 71 -1 1.5 -
3 A Bit Chilly 72 73 62 +11 3.0 -
4 Silver Tycoon Line 73 74 73 +1 0.0
5 Morning Chess 65 65 61 +4 1.5 -
6 Oliver Twist 79 68 69 -1 3.0 -
7 Three Cheers 67 79 57 +22 3.0 -
8 Flash Lightning 68 69 63 +6 1.5 -
9 Bosnay 73 74 63 +11 1.5 -
10 Sundrop 50 48 50 -2 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