Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY RACING MAIDEN PLATE (For all Maidens)

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Line Horse
Captains Walk
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 8
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    Miss Rose            3    57.5    1    0.00     10.5  60    55           55    -5
2    Maradiva             3    60.0    2    2.50     10.5  64    60           60    -4
3    Tipsy Tina           2    55.5    3    4.00     7.0   63    58           58    -5
4    Captains Walk        3    60.0    4    4.10     10.5  60    60           60    +0
5    Rhythm Of The Rain   3    57.5    5    4.15     10.5  69    55           59    -10
6    This Time Round      2    58.0    6    12.40    7.0   61    63           63    +2
7    Jayrani              2    58.0    7    17.90    7.0   76    63           66    -10
99   Foot Soldier         2    58.0    99   0.00     7.0   -     63           63    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Miss Rose 60 57 55 +2 10.5 -
2 Maradiva 64 54 60 -6 10.5 -
3 Tipsy Tina 63 91 58 +33 7.0 -
4 Captains Walk Line 60 54 60 -6 10.5
5 Rhythm Of The Rain 69 70 59 +11 10.5 -
6 This Time Round 61 54 63 -9 7.0 -
7 Jayrani 76 69 66 +3 7.0 -
99 Foot Soldier - 74 63 +11 7.0 -
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