Official NHA Assessment

Race 1: BETWAY AVIATOR WORK RIDERS MAIDEN PLATE (For all Maidens. R15 000 WIN BONUS RA MEMBERS)

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Line Horse
Miss Tucker
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
9 / 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    Valyrian Sword       2    58.0    1    0.00     6.5   65    63           63    -2
2    Miss Tucker          3    57.5    2    0.25     9.5   56    56           56    +0
3    Raptor Island        2    60.0    3    1.50     6.5   67    67           67    +0
4    Western Jack         3    60.0    4    1.75     9.5   55    61           61    +6
5    Maldano              3    58.0    5    1.85     9.5   -     57           57    +57
6    Bridgerton           2    58.0    6    4.35     6.5   73    63           63    -10
7    Seethebadge          2    58.0    7    6.85     6.5   70    63           63    -7
8    Chalcos              2    58.0    8    7.10     6.5   -     63           63    +63
9    Deep Dive            3    60.0    9    7.60     9.5   18    61           61    +43
10   Goosebumps           2    58.5    10   9.35     6.5   77    64           67    -10
11   Howe Of Fife         4    60.0    11   16.10    11.0  -     58           58    +58
12   Greek Mafia          5    60.0    12   23.85    0.0   49    80           80    +31
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Valyrian Sword 65 50 63 -13 6.5 -
2 Miss Tucker Line 56 48 56 -8 9.5
3 Raptor Island 67 61 67 -6 6.5 -
4 Western Jack 55 50 61 -11 9.5 -
5 Maldano - 60 57 +3 9.5 -
6 Bridgerton 73 67 63 +4 6.5 -
7 Seethebadge 70 45 63 -18 6.5 -
8 Chalcos - 60 63 -3 6.5 -
9 Deep Dive 18 39 61 -22 9.5 -
10 Goosebumps 77 75 67 +8 6.5 -
11 Howe Of Fife - 10 58 -48 11.0 -
12 Greek Mafia 49 45 80 -35 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