Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY OPEN MAIDEN (For Maiden R15 000 Win Bonus ROA Members)

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Line Horse
Maya's Cat
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
5 / 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    Siberian Fox         2    60.0    1    0.00     1.5   64    66           66    +2
2    Short Sharp Shock    3    59.5    2    0.75     2.5   65    63           63    -2
3    Maya's Cat           3    60.0    3    0.85     2.5   64    64           64    +0
4    Mari Marie           3    56.5    4    0.95     2.5   62    57           57    -5
5    Hundredfifthavenue   2    58.5    5    4.45     1.5   66    63           63    -3
6    Glittering Boots     3    55.5    6    6.70     2.5   59    55           55    -4
7    Bold As Brass        2    54.0    7    7.20     1.5   46    54           54    +8
8    Sundrop              6    54.0    8    8.45     0.0   50    57           57    +7
9    American Hashtag     3    54.0    9    9.70     2.5   49    52           52    +3
10   California Boy       3    57.0    10   9.80     2.5   58    58           58    +0
11   Sound Of Hooves      2    60.0    11   29.05    1.5   -     66           66    +66
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Siberian Fox 64 62 66 -4 1.5 -
2 Short Sharp Shock 65 62 63 -1 2.5 -
3 Maya's Cat Line 64 67 64 +3 2.5
4 Mari Marie 62 67 57 +10 2.5 -
5 Hundredfifthavenue 66 57 63 -6 1.5 -
6 Glittering Boots 59 52 55 -3 2.5 -
7 Bold As Brass 46 44 54 -10 1.5 -
8 Sundrop 50 48 57 -9 0.0 -
9 American Hashtag 49 52 52 ✓ Match 2.5 -
10 California Boy 58 53 58 -5 2.5 -
11 Sound Of Hooves - 20 66 -46 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