Official NHA Assessment

Race 5: WSB PREMIER'S CHAMPIONS CHALLENGE 29 APRIL MR 79 DIVIDED HANDICAP (Open)

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Line Horse
African Torrent
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
4 / 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    Twin Turbo           4    60.0    1    0.00     1.5   79    82           79    +0
2    American Biscuit     3    55.5    2    1.75     3.5   77    72           72    -5
3    African Torrent      2    59.5    3    4.00     0.0   85    85           85    +0
4    Call The Wind        3    54.0    4    5.25     3.5   67    66           66    -1
5    Romeo's Magic        7    55.5    5    6.25     0.0   70    76           76    +6
6    Island Beauty        3    54.5    6    6.50     3.5   68    67           67    -1
7    Gilda Gray           3    52.0    7    7.30     3.5   60    62           62    +2
8    Cerulean Dancer      2    52.0    8    8.55     0.0   67    69           69    +2
9    Time Spirit          4    50.5    9    8.75     1.5   60    63           63    +3
10   Ballroom Bliss       4    59.0    10   11.75    1.5   77    80           80    +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Twin Turbo 79 88 79 +9 1.5 -
2 American Biscuit 77 65 72 -7 3.5 -
3 African Torrent Line 85 68 85 -17 0.0
4 Call The Wind 67 56 66 -10 3.5 -
5 Romeo's Magic 70 73 76 -3 0.0 -
6 Island Beauty 68 63 67 -4 3.5 -
7 Gilda Gray 60 64 62 +2 3.5 -
8 Cerulean Dancer 67 71 69 +2 0.0 -
9 Time Spirit 60 60 63 -3 1.5 -
10 Ballroom Bliss 77 84 80 +4 1.5 -
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