Official NHA Assessment

Race 8: NEXT TURFFONTEIN RACEMEETING SATURDAY 16 JULY MR 78 HANDICAP (Open)

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Line Horse
Bey Suyay
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
5 / 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    Vanderbilt           3    56.5    1    0.00     0.5   73    70           73    +0
2    Bey Suyay            4    60.0    2    3.50     0.5   78    78           78    +0
3    Castle Corner        4    58.0    3    4.75     0.5   74    73           73    -1
4    Indus Knight         3    57.5    4    5.00     0.5   75    72           72    -3
5    Rock Of Africa       8    60.0    5    6.00     0.0   78    78           78    +0
6    Timbavati River      3    58.0    6    8.00     0.5   76    73           73    -3
7    Dark Tide            5    57.5    7    17.75    0.0   73    73           73    +0
8    Fire Flower          5    58.0    8    20.00    0.0   74    74           74    +0
9    Southern Blaze       3    57.5    9    21.00    0.5   75    72           72    -3
10   Waqaas (AUS)         6    60.0    10   30.00    0.0   78    78           78    +0
11   Bloomington          3    57.0    11   99.99    0.5   74    71           71    -3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Vanderbilt 73 103 73 +30 0.5 -
2 Bey Suyay Line 78 84 78 +6 0.5
3 Castle Corner 74 72 73 -1 0.5 -
4 Indus Knight 75 70 72 -2 0.5 -
5 Rock Of Africa 78 78 78 ✓ Match 0.0 -
6 Timbavati River 76 79 73 +6 0.5 -
7 Dark Tide 73 53 73 -20 0.0 -
8 Fire Flower 74 72 74 -2 0.0 -
9 Southern Blaze 75 89 72 +17 0.5 -
10 Waqaas (AUS) 78 56 78 -22 0.0 -
11 Bloomington 74 69 71 -2 0.5 -
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