Official NHA Assessment

Race 7: TAB.CO.ZA FM 101 DIVIDED HANDICAP (F & M) (Fillies & Mares)

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Line Horse
Frozen Fantasy
Reference for assessment
Exact Matches
3 / 11
Calculated = Official
Close Matches
6 / 11
Within 2 points
Significant Diffs
2 / 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    Chrome Tourmaline    4    60.0    1    0.00     6.0   104   99           104   +0
2    Poblano              3    56.0    2    0.25     5.0   93    93           93    +0
3    Frozen Fantasy       3    58.0    3    1.35     5.0   97    97           97    +0
4    Tuscan Romance       3    52.0    4    1.65     5.0   85    85           85    +0
5    Green Flash          4    54.5    5    2.35     6.0   90    88           88    -2
6    Blizzard Snow        3    52.5    6    3.25     5.0   89    86           86    -3
7    Calantha             4    56.0    7    3.75     6.0   93    91           91    -2
8    Elegantrix           2    58.0    8    4.25     3.5   104   100          100   -4
9    Blind Ambition       3    55.0    9    6.25     5.0   91    91           91    +0
10   Kindred Heart        3    53.5    10   13.50    5.0   88    88           88    +0
11   Komati River         3    56.0    11   16.25    5.0   93    93           93    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chrome Tourmaline 104 107 104 +3 6.0 -
2 Poblano 93 100 93 +7 5.0 -
3 Frozen Fantasy Line 97 98 97 +1 5.0
4 Tuscan Romance 85 86 85 +1 5.0 -
5 Green Flash 90 91 88 +3 6.0 -
6 Blizzard Snow 89 86 86 ✓ Match 5.0 -
7 Calantha 93 95 91 +4 6.0 -
8 Elegantrix 104 106 100 +6 3.5 -
9 Blind Ambition 91 93 91 +2 5.0 -
10 Kindred Heart 88 88 88 ✓ Match 5.0 -
11 Komati River 93 93 93 ✓ Match 5.0 -
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