Official NHA Assessment

Race 2: RACING240 FOR RACING. FOR YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
American Biscuit
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
10 / 12
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    American Biscuit     3    60.0    1    0.00     3.0   77    77           77    +0
2    Free Movement        3    60.0    2    1.50     3.0   73    80           80    +7
3    Celtic Rush          5    60.0    3    4.00     0.0   69    84           84    +15
4    Us Open              3    60.0    4    4.05     3.0   67    78           78    +11
5    Williamson           2    57.5    5    4.50     0.0   59    78           78    +19
6    Mambo Come Tesio     3    60.0    6    5.00     3.0   -     77           77    +77
7    Kanimambo            5    60.0    7    6.75     0.0   67    83           83    +16
8    Skyjet               2    60.0    8    6.80     0.0   62    83           83    +21
9    Lorna Lilly          3    57.0    9    15.00    3.0   55    71           71    +16
10   California Boy       3    60.0    10   15.75    3.0   64    77           77    +13
11   Blyde River          4    57.5    11   16.50    1.5   48    75           75    +27
12   All Black Captain    3    60.0    12   30.00    3.0   46    77           77    +31
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 American Biscuit Line 77 65 77 -12 3.0
2 Free Movement 73 81 80 +1 3.0 -
3 Celtic Rush 69 69 84 -15 0.0 -
4 Us Open 67 60 78 -18 3.0 -
5 Williamson 59 62 78 -16 0.0 -
6 Mambo Come Tesio - 80 77 +3 3.0 -
7 Kanimambo 67 59 83 -24 0.0 -
8 Skyjet 62 57 83 -26 0.0 -
9 Lorna Lilly 55 50 71 -21 3.0 -
10 California Boy 64 53 77 -24 3.0 -
11 Blyde River 48 48 75 -27 1.5 -
12 All Black Captain 46 55 77 -22 3.0 -
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